Title: Software Engineer 2 (Data Transformation & Analytics)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description
The Software Engineer shall be responsible for collaborating with Product Owners, System Engineers, and project Software Engineers to develop and implement user interface components to provide an interactive, coherent, and visually appealing UI user experience for a mission-focused enterprise web application in a Linux environment.
SWE-2 Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus three (3) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Position Required Skills
Position Desired Skills
Responsibilities:
Senior Principal Cyber Systems Engineer Basic Qualifications:
Preferred Qualifications:
Basic Qualifications for a Principal Cyber Software Test Engineer:
Basic Qualifications for a Sr. Principal Cyber Software Test Engineer:
Preferred Qualifications for both levels:
Title: Senio Database Developer (Web Technologies & Data Migration)
Location: Annapolis Junction
Compensation Range: $200 – 220k
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Description:
Seeking a skilled Database Developer with strong expertise in Oracle PL/SQL, REST APIs, and front-end web technologies, including HTML, CSS, and JavaScript. The ideal candidate will have hands-on experience with data migration projects and a proven ability to design, develop, and optimize database-driven applications.
Qualifications:
Key Responsibilities:
Required Skills:
Desired Skills:
Title: Software Engineer 2 (UI/UX Front-End)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Description:
The Software Engineer 2 will design, develop, and maintain modern front‑end user interfaces for mission applications, creating responsive, intuitive UI/UX components that visualize data, support interactive workflows, and integrate cleanly with backend services. Responsibilities include implementing new front‑end features, optimizing UI performance, resolving user‑facing defects, conducting component-level testing, contributing to Agile design discussions, and ensuring UI solutions meet mission security, accessibility, and usability standards. The engineer will collaborate with backend developers and mission users to translate requirements into scalable UI components, apply approved design methodologies, integrate COTS/GOTS solutions when appropriate, and support documentation and test procedure development.
Requirements:
Core Skills:
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
We are seeking a highly skilled, hands‑on Senior Information Systems Security Engineer (ISSE) to secure mission‑critical systems across hybrid, cloud, and air‑gapped environments. The ideal candidate brings deep technical expertise in RMF, STIG compliance, vulnerability scanning, continuous monitoring, and secure system engineering—someone who is actively involved in building and configuring secure solutions rather than simply reviewing them. In this role, you will design, engineer, assess, and sustain security controls across complex system architectures, ensuring compliance, operational readiness, and mission resilience.
• Engineer, implement, and manage security solutions (firewalls, IDS/IPS, endpoint protection, encryption)
• Perform security assessments across systems, applications, and networks
• Implement, validate, and maintain RMF NIST 800‑53 controls across on‑prem, cloud, and air‑gapped systems
• Conduct STIG checks, hardening, and secure configuration updates for OS, applications, network devices, and cloud resources
• Run ACAS/Tenable scans, analyze vulnerabilities, and drive remediation with engineering teams
• Configure log ingestion, parsing, and data flows into SIEM platforms (Splunk), and build dashboards and alerts
• Monitor network traffic, logs, and events to detect anomalies and security threats
• Conduct incident investigations and provide technical recommendations for mitigation
• Maintain and enhance incident response plans and continuous monitoring procedures
• Engineer, configure, and modify secure system and network baselines
• Analyze and troubleshoot network protocols, packet flows, and configuration issues
• Produce RMF artifacts, POA&Ms, scan reports, dashboards, and security documentation
• Collaborate with DevSecOps, system engineering, IT, and development teams to embed security into the lifecycle
• Write user stories, define security acceptance criteria, and support regression testing
• Perform system assessments and security engineering within air‑gapped and restricted networks
• Support ongoing continuous monitoring activities and security control reviews
• 7+ years cybersecurity/ISSE experience designing, implementing, and assessing security controls
• Strong experience with RMF, NIST 800‑53, STIGs, ICD 503, FISMA, FedRAMP
• SIEM experience, including log configuration, dashboards, and analytics (Splunk preferred)
• Hands‑on ACAS/Tenable vulnerability scanning and analysis
• Cloud security experience (AWS/Azure/GovCloud) in IL5–IL6 environments
• Strong understanding of network protocols, OS internals, and infrastructure security
• Skilled in incident response and forensic analysis
• Experience with tools such as Fortify, Acunetix, and Prisma Cloud
• Experience configuring/modifying secure system and network baselines
• Familiarity with agile workflows, user stories, and regression testing
• Experience working in air‑gapped or disconnected environments
• Strong communication skills for both technical and non‑technical audiences
• CISSP or DoD 8140‑approved certification
• Active TS/SCI with CI poly
Title: Senior Database Engineer
Location: Annapolis Junction
Compensation Range: $165 – 185k
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Description:
The Database Engineer (DE3) provides advanced technical expertise in database design, development, implementation, and long‑term maintenance within a mission‑critical environment. This role supports the full data lifecycle, including information storage and retrieval, data flow, schema development, performance tuning, and cloud‑aligned data operations. The engineer will develop both relational and object‑oriented databases, build database parser/loading software, and create scripts, queries, and macros to transform data into usable structures. The DE3 is responsible for ensuring that database architectures align with overall system design, balancing constraints such as data volume, user concurrency, logical/physical distribution, response times, retention rules, and security controls.
Qualifications:
Required Skills:
Core Responsibilites:
Title: Senior Linux System Administrator/System Engineer
Location: Annapolis Junction
Compensation Range: $190 – 210k
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Description:
The Sr. System Administrator / System Engineer supports a high‑visibility, mission‑critical environment by providing expert‑level administration, engineering, and sustainment of Linux‑based systems across secure facilities. This role requires deep technical proficiency in CentOS/RHEL environments, enterprise middleware (JBoss/Wildfly), virtualization, automation, and secure system operations. The engineer will collaborate across mission teams, and provide support to maintain system reliability, availability, and compliance. The position demands a strong independent work ethic, adaptability, and broad familiarity with modern infrastructure components including storage, networking, security, and scripting.
Required Skills:
Desired Skills:
Additional Desired Skills or Familiarization:
Title: Senior Oracle Database Administrator
Location: Annapolis Junction
Compensation Range: $190 – 210k
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Description:
The Sr. Oracle Database Administrator / Engineer supports a high‑visibility mission environment by providing expert‑level database administration, engineering, and operational sustainment for enterprise‑scale Oracle database systems. This role involves managing large, complex Oracle environments, executing database design and modeling activities, and ensuring system reliability, performance, and availability. The administrator works across multiple secure locations—including Oracle SCIF spaces—and may support evening and weekend operations as needed. This position requires strong independence, excellent communication skills, and the ability to interpret customer requirements and translate them into effective database solutions.
Required Skills:
Title: Senior ServiceNow Requirements Engineer
Location: Bethesda, MD
Compensation Range: $175k approximately
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
| Seeking an experienced ServiceNow (SNOW) Requirements Engineer to support our IC customer. The ideal candidate will serve as a critical bridge between stakeholders and technical teams, with responsibilities focused on collecting, analyzing, and refining requirements for SNOW applications and workflows. |
| Given the nature of this role, the selected candidate will regularly interface with very senior IC staff and cross-functional contractors supporting separate contracts. This requires a calm, confident communication style to engage effectively with diverse stakeholders and enable mission success. |
| As a Requirements Engineer, you will play a pivotal role in ensuring the successful execution of IT and SNOW workflow projects that are foundational to the IC Customer's mission. By using your analytical expertise and confident communication style, you will directly contribute to the development of secure, scalable, and impactful solutions. Join a high-performing team where your skills will drive innovation and enable mission success. |
| Primary Responsibilities: |
| Requirements Gathering & Analysis: |
| Partner with senior IC leadership and stakeholders to collect, refine, and prioritize requirements for SNOW applications and workflows. |
| Translate customer objectives into detailed, actionable requirements while maintaining alignment with mission priorities and system capabilities. |
| Ensure requirements accurately capture stakeholder needs and are feasible within the technical and operational environment. |
| Collaboration with Stakeholders: |
| Work closely with IC staff, developers, and other contractors to clarify requirements and address gaps in design and implementation. |
| Facilitate discussions and coordination between teams to ensure that requirements are clearly communicated and understood across contracts and workstreams. |
| Participate in technical exchange meetings and workshops to refine requirements in alignment with SNOW platform capabilities and best practices. |
| Documentation and Communication: |
| Document requirements, use cases, process flows, and acceptance criteria in a clear and structured format to guide development and testing teams. |
| Provide regular updates to IC leadership on requirements status, risks, and impacts, ensuring decisions are informed by accurate and actionable insights. |
| Actively support change management processes, documenting updates or refinements to requirements based on stakeholder feedback and evolving needs. |
| Cross-Functional Leadership: |
| Interface confidently with senior IC officials, ensuring requirements workflows are driven by strategic priorities and communicated in a professional, poised manner. |
| Collaborate across multiple contractor teams, building relationships that foster open communication and alignment toward shared mission goals. |
| Work Environment: |
| Collaboration: The role requires daily interaction with senior IC staff and integration with cross-functional contractor teams, where clear communication and strong interpersonal skills are essential. |
| Qualifications |
| Basic Qualifications: |
| TS/SCI with Polygraph is REQUIRED |
| Experience & Skills: |
| Minimum of 8 years of relevant experience, with proven expertise in collecting and refining technical requirements for SNOW applications and workflows. |
| 14+ years of professional experiance |
| Strong understanding of SNOW platform capabilities, including workflows, applications, and integrations. |
| Experience operating in dynamic team environments, collaborating with both technical and non-technical stakeholders. |
| Interpersonal & Communication Skills: |
| Confidence working with very senior leadership and an ability to communicate clearly, calmly, and effectively across diverse audiences. |
| Demonstrated ability to navigate and collaborate across multiple contractor teams, fostering alignment in cross-functional environments. |
| Strong analytical and interpersonal skills for bridging the gap between technical teams and mission-driven stakeholders. |
| Preferred Qualifications: |
| Familiarity with Intelligence Community (IC) environments, workflows, and directives. |
| Experience working in agile or hybrid development environments, including collaboration with Scrum teams. |
| Certification in ServiceNow frameworks or business analysis methodologies such as Certified Application Specialist or Certified Business Analyst Professional (CBAP). |
| Capability in creating visual requirements documentation (e.g., process models, data flow diagrams) using tools like Microsoft Visio, Lucidchart, or other standard platforms. |
Title: Senior ServiceNow Test Engineer
Location: Bethesda, MD
Compensation Range: $215k approximately
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Seeking a highly skilled ServiceNow (SNOW) Tester to support the IC Customer. The selected candidate will play a key role in testing and validating SNOW applications, workflows, and solutions to ensure seamless functionality and mission-critical performance.
This role requires hands-on experience with automated testing methods for SNOW platforms, deep attention to detail, and the ability to collaborate effectively with cross-contracting teams supporting parallel initiatives. The ability to work in a dynamic environment and maintain strong stakeholder relationships is essential.
Primary Responsibilities:
Conduct comprehensive testing of SNOW applications and workflows to identify, document, and escalate bugs and issues across all SNOW modules and functionalities.
Develop and execute automated testing scripts for SNOW platforms, ensuring consistent performance and minimizing manual testing cycles.
Validate SNOW design and development solutions, ensuring workflows adhere to specified requirements and align with organizational best practices.
Process Improvement & Quality Assurance:
Define and refine testing procedures, approaches, and best practices to optimize testing processes and improve reliability and functionality of workflows.
Collaborate closely with developers and stakeholders to confirm issue resolution and retest systems to ensure fixes are implemented effectively.
Track and report test results, providing metrics and insights directly to leadership to guide improvements and upgrades to the SNOW platform.
Collaboration Across Teams:
Work closely with contractors on multiple contracts and across teams to ensure seamless testing integration for interconnected systems and workflows.
Participate in technical exchange meetings, reviews, and design workshops to ensure testing aligns with program objectives and stakeholder expectations.
Build relationships with cross-functional teams, administrators, and leadership to ensure transparency, communication, and efficient testing processes.
Qualifications
Basic Qualifications:
TS/SCI with Polygraph is REQUIRED
Experience & Skills:
Minimum of 13 years of professional experience, with demonstrated expertise in testing SNOW applications and workflows.
Strong experience with automated testing tools and methodologies, particularly for SNOW platforms.
Exceptional problem-solving skills, with attention to detail when identifying, documenting, and tracking software defects.
Interpersonal & Teamwork Skills:
Ability to collaborate across contracting teams, fostering cohesion while contributing to the success of parallel initiatives.
Adept at explaining complex testing procedures and results to non-technical stakeholders and leadership.
A proactive communicator who can anticipate challenges and navigate dynamic workflows across multiple teams.
Preferred Qualifications:
Familiarity with Intelligence Community (IC) environments, including workflows and mission-critical IT systems.
Strong understanding of SNOW modules and capabilities, including workflow automation and integration best practices.
Experience using testing management tools such as Automated Test Framework, or other tools suited to automated SNOW application testing.
Relevant certifications in SNOW or testing-related areas, such as Certified Application Specialist (SNOW) or ISTQB Foundation Level Certification in Software Testing.
Title: Senior ServiceNow Scrum Master
Location: Bethesda, MD
Compensation Range: $215k approximately
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Seeking a highly experienced Senior ServiceNow Scrum Master to support the IC customer. In this role, the candidate will deliver agile project facilitation and process leadership for efforts utilizing the ServiceNow (SNOW) platform. The selected Scrum Master will coordinate with senior IC leadership, other contractors, and cross-functional teams to ensure the delivery of high-quality solutions aligned with the customer’s mission objectives.
This position requires a professional with strong interpersonal skills, the ability to develop relationships with very senior leadership, and the skill to navigate and collaborate across contracting teams and enterprise stakeholders.
As a Senior SNOW Scrum Master, you will play a critical role in enabling and enhancing IC mission capabilities by blending agile principles, SNOW expertise, and leadership to deliver impactful, scalable solutions. Join a dynamic, high-performing environment where your contributions will make a tangible and lasting impact.
Primary Responsibilities:
Scrum Facilitation & Agile Leadership:
Act as the Scrum Master for projects using the SNOW platform, enabling agile processes and ensuring adherence to Scrum principles, roles, and best practices.
Serve as a key facilitator for Scrum ceremonies, including sprint planning, daily stand-ups, sprint reviews, retrospectives, and backlog refinement sessions.
Optimize team performance, measuring velocity and managing team capacity to deliver defined goals and milestones efficiently.
Collaboration with Leadership & Stakeholders:
Work closely with senior IC leadership to ensure project alignment with organizational mission priorities and strategic objectives.
Collaborate across contracting teams and project stakeholders to facilitate communication, resolve conflicts, and ensure cooperation between teams supporting other contracts.
Project & Risk Management:
Ensure projects meet scope, schedule, and performance objectives by managing risks, identifying potential blockers, and recommending mitigation strategies.
Maintain consistent communication with senior leadership, providing regular updates, project status reports, and metrics to track progress and identify areas for improvement.
SNOW Expertise:
Guide teams in implementing and expanding ServiceNow functionalities, ensuring the platform supports mission priorities effectively.
Coordinate updates, enhancements, and new capabilities in the SNOW environment by synchronizing with technical teams and ODNI leadership.
Mentorship and Team Empowerment:
Act as a mentor and servant leader, fostering a culture of accountability, transparency, and collaboration among team members.
Provide coaching on agile principles and practices to team members, ensuring alignment and consistency across workstreams.
Collaboration:
This role involves daily interaction with senior leadership and integrated contractor teams, requiring strong stakeholder management and communication skills.
Qualifications
Basic Qualifications:
TS/SCI with Polygraph is REQUIRED.
Minimum of 13 years of relevant professional experience, with at least 5 years operating as a Scrum Master in an agile development environment.
Bachelor’s degree in a related field (e.g., Information Technology, Engineering, Business) or equivalent experience.
Agile & Scrum Skills:
Proven expertise in agile coaching, servant leadership, and Scrum Master roles within complex, dynamic environments.
Ability to manage SNOW VTB boards (or equivalent tools) for tracking sprint progress, managing team workloads, and reporting metrics.
Interpersonal & Leadership Skills:
Demonstrated ability to interface effectively with senior leadership, including IC executives, by presenting concise updates and facilitating strategic discussions.
Exceptional communication skills to collaborate across multi-contractor and cross-functional teams, resolving conflicts and aligning stakeholders.
A proactive mindset with the ability to anticipate challenges, communicate risks, and align team efforts with mission goals.
Preferred Qualifications:
Agile certifications such as Certified Scrum Master (CSM), Advanced Certified Scrum Master (A-CSM), or SAFe Scrum Master (SSM).
Familiarity with Intelligence Community (IC) environments, directives, and mission workflows.
Experience working in a consultative role across multiple contractor teams and understanding diverse enterprise priorities.
Title: Software Engineer (Cyber Capability Development)
Location: Annapolis Junction, MD
Compensation Range: $175 – $195K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description:
The Software Engineer will support applied cyber research efforts by designing, developing, and prototyping hardware‑integrated and software‑based capabilities that demonstrate real‑world mission impact. The engineer will translate emerging applied cyber concepts into functional system components by creating detailed design specifications and implementing them using industry‑standard development tools and methodologies.
Qualifications:
Seven (7) years experience as a SWE, in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required.
Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree.
Position Required Skills:
Position Desired Skills:
System Administrator
Herndon, VA
Active TS/SCI with Polygraph
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Job Responsibilities:
Required Skills:
Desired Skills:
Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
DevOps Engineer
Herndon, VA
Active TS/SCI with Polygraph
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Job Responsibilities:
Required Skills:
Desired Skills:
Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
A/V Engineer
Herndon, VA
Active TS/SCI with Polygraph
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Job Responsibilities:
Required Skills:
Desired Skills:
Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
Title: CNO Developer (iOS)
Location: Annapolis Junction, MD
Compensation Range: $185 -$205K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Overview:
We are seeking a highly motivated and technically skilled CNO Developer to join our iOS team supporting mission-critical cyber operations. The ideal candidate must possess strong software engineering fundamentals, hands‑on experience with iOS internals, and at least two years of cybersecurity or CNO‑focused development. This role supports mission‑driven SAS efforts and requires engineers comfortable working at low levels of the operating system, analyzing complex behaviors, and developing advanced capabilities in constrained environments.
Required Skills:
Desired Skills:
Qualifications:
Title: Software Integration Engineer 3 (Systems & Cloud)
Location: Annapolis Junction, MD
Compensation Range: $220 -$240K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description:
The Software Integration Engineer shall be responsible for the integration, test, deployment, and troubleshooting of various production-ready mission services deployed in an on-prem enclave and AWS Cloud environments.
Qualifications:
Bachelor's Degree in Computer Science or related field and have at least eight (8) years of demonstrable experience with integrating, installing, configuring, upgrading, compiling, and supporting COTS/GOTS software in a heterogeneous operating system environment. OR
The individual shall have five (5) years full time Computer Science directly related work that can be substituted for a degree and have at least eight (8) years of demonstrable experience. OR
An industry recognized professional certification, as defined in the TT0s, may substitute as one (1) year experience. A master’s degree in computer science or related field may substitute for two (2) years' experience.
Position Required Skills:
Position Desired Skills:
Title: Data Engineer Expert
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Seeking a highly motivated, self-directed professional for a Data Engineering role. In this role, you will design and maintain data pipelines, collaborate closely with development teams, and help deliver reliable data solutions that enable teams to transform data into actionable insights.
Required Qualifications:
•
Active TS/SCI with Polygraph clearance.
•
A Master’s degree in Computer Science, Information Systems, Engineering, or additional years of specialized experience in a scientific or technical discipline.
•
Build and maintain reliable data pipelines that support ingestion, transformation, and delivery of large datasets
•
Partner with software developers and engineering teams to integrate data solutions into existing systems and applications
•
Develop and optimize SQL queries to support data retrieval, transformation, and analysis
•
Work with relational databases such as PostgreSQL, Oracle, and MySQL to store, manage, and access data
•
Develop scripts and automation using Python, Linux, and shell scripting to support data processing tasks
•
Operate within AWS environments to support cloud-based data infrastructure and workflows
•
Prepare and structure data outputs in usable formats for analysis and downstream systems, including JSON
•
8+ years of experience developing or maintaining data pipelines in collaboration with development teams
•
4+ years of hands-on experience with Python
•
Experience working with AWS cloud services
•
Familiarity with SPARC environments and relational databases including PostgreSQL, Oracle, or MySQL
•
Demonstrated experience writing and maintaining SQL queries
•
4+ years of experience working in Linux environments, including shell scripting
Experience preparing and managing structured and unstructured datasets, including JSON formats
Desired Qualifications:
•
Excellent communication and collaboration skills.
•
Experience with workflow orchestration tools such as Apache NiFi or Apache Airflow
•
4+ years of development experience with Java or Scala
•
Experience managing or supporting EMR or SPARC clusters
•
Background in performance tuning and optimization of data pipelines or large data systems
•
4+ years of experience working with Hive or Iceberg
•
Familiarity with implementing cloud-based security practices
•
Experience using ACM processes for code deployment
Title: Data Engineer Full Performance
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Seeking a highly motivated, self-directed professional for a Data Engineering role. In this role, you will design and maintain data pipelines, collaborate closely with development teams, and help deliver reliable data solutions that enable teams to transform data into actionable insights.
Required Qualifications:
•
Active TS/SCI with Polygraph clearance.
•
A Master’s degree in Computer Science, Information Systems, Engineering, or additional years of specialized experience in a scientific or technical discipline.
•
Build and maintain reliable data pipelines that support ingestion, transformation, and delivery of large datasets
•
Partner with software developers and engineering teams to integrate data solutions into existing systems and applications
•
Develop and optimize SQL queries to support data retrieval, transformation, and analysis
•
Work with relational databases such as PostgreSQL, Oracle, and MySQL to store, manage, and access data
•
Develop scripts and automation using Python, Linux, and shell scripting to support data processing tasks
•
Operate within AWS environments to support cloud-based data infrastructure and workflows
•
Prepare and structure data outputs in usable formats for analysis and downstream systems, including JSON
•
4+ years of experience developing or maintaining data pipelines in collaboration with development teams
•
2+ years of hands-on experience with Python
•
Experience working with AWS cloud services
•
Familiarity with SPARC environments and relational databases including PostgreSQL, Oracle, or MySQL
•
Demonstrated experience writing and maintaining SQL queries
•
2+ years of experience working in Linux environments, including shell scripting
•
Experience preparing and managing structured and unstructured datasets, including JSON formats
Desired Qualifications:
•
Excellent communication and collaboration skills.
•
Experience with workflow orchestration tools such as Apache NiFi or Apache Airflow
•
2+ years of development experience with Java or Scala
•
Experience managing or supporting EMR or SPARC clusters
•
Background in performance tuning and optimization of data pipelines or large data systems
•
2+ years of experience working with Hive or Iceberg
•
Familiarity with implementing cloud-based security practices
•
Experience using ACM processes for code deployment
Data Exploiter
Chantilly, VA
The Data Exploiter analyzes large, unstructured datasets to support operational targeting and analytical requirements. You will manage the entire data life cycle—from collection and triage to vulnerability assessment and the dissemination of actionable intelligence.
Key Responsibilities
Required Qualifications
Desired Qualifications
DevOps Engineer (Must have Kubernetes)
Chantilly, VA
The DevOps Engineer manages cloud and on-prem infrastructure to deliver complex software into production. This role focuses on building repeatable CI/CD processes, automation tools, and robust infrastructure-as-code solutions. The ideal candidate is a self-directed innovator capable of keeping pace with high-demand software development in an Agile environment.
Key Responsibilities
Required Qualifications
Desired Qualifications
Comms Network Engineer II
Annapolis Junction, MD
Active TS/SCI with Poly
Compensation Range: $180,000-$200,000
Position Summary
The Network Engineer supports the performance, reliability, and configuration of enclave networks and systems. This role monitors, analyzes, troubleshoots, and resolves network and system issues across LAN/CAN/WAN environments, working closely with internal stakeholders and external organizations to restore service and maintain operational excellence. The ideal candidate brings strong enterprise networking architecture, experience coordinating incident resolution, and familiarity with cloud and automation concepts.
Job Responsibilities:
Required Skills:
Familiarity with:
Preferred Skills:
Education/Experience Requirements:
Bachelor’s Degree in Computer Science, Information Systems, Engineering, or a related technical field and six (6) years of experience in a similar role; or An additional six (6) years of relevant experience may be substituted for the Bachelor’s Degree; or An Associate’s Degree plus an additional four (4) years of relevant experience. Compliance with DoD 8570.01-M with a minimum certification of IAT Level II (SEC+ or CCNA)
Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
Software Engineer
State College, PA
Active TS/SCI
Compensation Range: $140,000 – $180,000
Responsibilities:
• Design, develop, and maintain advanced software applications for our Satellite Ground Systems.
• Collaborate closely with systems engineers, hardware designers, and other software engineers to deliver reliable and high performance software solutions.
• Design, implement, and test Java, C++ and Python based applications and software components for satellite ground systems.
• Work in parallel with legacy platform teams to eventually migrate workloads onto your pipelines.
• Collaborate with cross-functional teams to define software requirements and specifications.
• Work with previously written code and make modifications as necessary.
• Ensure software performance, reliability, and scalability.
• Participate in software design reviews, code reviews, and system integration activities.
• Contribute to the completion of program and project milestones under the specific guidance of their immediate supervisor.
• Follow established Software processes and procedures, development, documentation and maintenance/management of operations concepts, requirements (system, element, segment level), external and internal interfaces, and other software engineering work products/artifacts.
• Learn the workings of satellite ground systems.
• Work with new tools that will keep you state-of-the-art.
Basic Qualifications:
• An active and transferable Top Secret security clearance that can be crossed over to a TS/SCI security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience.
• Five (5) years of RECENT experience in object-oriented software design and development using Java and C++ in a Linux or UNIX environment.
• Experience using unit testing tools (e.g., JUnit).
• Experience with Python.
• Experience developing software in an Agile/DevOps environment.
Preferred Qualifications:
• Experience leading a technical team is highly desired
• Experience working in a DevOps environment using Docker, Kubernetes, Maven, Jira, Git, BitBucket and Confluence.
• Experience working with SonarQube
• Experience working with SQL
• Security+ certification
• Experience with satellite communication systems and protocols is highly preferred.
• Familiarity with secure coding practices, especially in a defense or aerospace setting.
• Master’s degree in Science, Technology, Engineering or Mathematics (STEM).
Software Engineer
State College, PA
Active TS/SCI
Compensation Range: $105,000 – $125,000
Responsibilities:
• Design, develop, and maintain advanced software applications for our Satellite Ground Systems.
• Collaborate closely with systems engineers, hardware designers, and other software engineers to deliver reliable and high-performance software solutions.
• Design, implement, and test Java and Python based applications and software components for satellite ground systems.
• Work in parallel with legacy platform teams to eventually migrate workloads onto your pipelines.
• Collaborate with cross-functional teams to define software requirements and specifications.
• Work with previously written code and make modifications as necessary.
• Ensure software performance, reliability, and scalability.
• Participate in software design reviews, code reviews, and system integration activities.
• Contribute to the completion of program and project milestones under the specific guidance of their immediate supervisor.
• Follow established Software processes and procedures, development, documentation and maintenance/management of operations concepts, requirements (system, element, segment level), external and internal interfaces, and other software engineering work products/artifacts.
• Learn the workings of satellite ground systems.
• Work with new tools that will keep you state-of-the-art.
Basic Qualifications:
• An active and transferable Top Secret security clearance that can be crossed over to a TS/SCI security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 2 years of prior relevant experience.
• Two (2) years of RECENT experience in object-oriented software design and development using Java in a Linux or UNIX environment.
• Experience using unit testing tools (e.g., JUnit).
• Experience with Python.
• Experience developing software in an Agile/DevOps environment.
Preferred Qualifications:
• Experience leading a technical team is highly desired
• Experience working in a DevOps environment using Docker, Kubernetes, Maven, Jira, Git, BitBucket and Confluence.
• Experience working with SonarQube
• Experience working with SQL
• Security+ certification
• Experience with satellite communication systems and protocols is highly preferred.
• Familiarity with secure coding practices, especially in a defense or aerospace setting.
• Master’s degree in Science, Technology, Engineering or Mathematics (STEM).
Title: Java Software Developer
Location: Colorado Springs, CO or Remote
Compensation Range: $145,000 – $185,000
Active Secret or Top Secret
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Job Requirements
Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
Title: Software Engineer 3 (Mission Application Dev & Int)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Summary:
The Software Engineer shall be responsible for developing, sustaining, and troubleshooting GHOSTGEM's software suite of applications including DINO and possibly future capabilities as mission needs arise. Software development activities include implementation, testing, and integration with other COTS, GOTS, and FOSS products, packages, and libraries.
Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity
OR
Nine (9) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Required Skills:
Desired Skills:
Title: Software Engineer 2 (Mission Application Dev & Int)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
SWE-2 Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus three (3) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Position Description
The Software Engineer shall be responsible for developing, sustaining, and troubleshooting GHOSTGEM's software suite of applications including DINO and possibly future capabilities as mission needs arise. Software development activities include implementation, testing, and integration with other COTS, GOTS, and FOSS products, packages, and libraries.
Position Required Skills
Position Desired Skills
Title: Software Engineer 2 (Workflow Orchestration & Observability)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
SWE-2 Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus three (3) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Position Description
The Software Engineer shall be responsible for creating and maintaining data workflows and automation pipelines using Apache Airflow. This role focuses on building reliable, scalable, and observable workflow orchestration solutions that support data engineering, analytics, and operational use cases. The engineer will collaborate closely with data engineers, platform teams, and stakeholders to ensure workflows are efficient, secure, and production ready.
Position Required Skills
Position Desired Skills
Title: Software Engineer Expert
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
We are actively seeking Systems Engineers to perform as a Splunk Cloud engineer with a minimum of 11 years' experience. Information Technology or Engineer Bachelor's or Master’s Degrees are preferred. Specific skills should include the following:
• Experience integrating diverse data streams
• Experience with data transfer tools (Ex: NiFi, Cribl, etc)
• Establishes data standards and acts as custodian of IT and service delivery data sets and streams
• Experience in analyzing complex networks and systems
• Experience in analyzing log data from various network components and operating systems
• Knowledge of complex environments involving shared networks and multiple security enclaves
• Systems Engineer with Data Engineer background
• Ability to manage and troubleshoot data feeds
• Splunk familiarization
• Python
• Required Qualifications
• Experience: 6+ years working with Splunk or Splunk Certifications, with at least 3 years on Splunk Cloud or large Splunk Enterprise deployments.
• Technical Skills: Expert SPL, knowledge of Splunk apps (Enterprise Security, ITSI, DB Connect), forwarder architectures, indexer/search head concepts.
• Cloud & Observability: Hands on experience onboarding data from AWS, Azure, and/or GCP; familiarity and observability tooling.
• Automation: Proficiency CloudFormation and experience integrating Splunk deployments into CI/CD.
• Scripting: Strong Python and Bash skills for automation, integrations, and ingestion pipelines.
• Security Knowledge: Understanding of logging best practices, log retention requirements, secure transport, and common compliance frameworks.
• Soft Skills: Strong troubleshooting, stakeholder communication, project leadership, and mentoring capability.
Preferred Education, Experience, & Skills:
• Splunk Certified Cloud Architect, Splunk Certified Admin, or Splunk Certified Power User.
• Cloud certifications (AWS/Azure/GCP).
• Experience with observability frameworks (OpenTelemetry), metrics pipelines, and metric-to-log correlation.
• Prior experience operating at enterprise scale (multi TB ingestion/day, global deployments).
• Proficiency with Terraform, Ansible, or similar IaC tools and experience integrating Splunk deployments into CI/CD.
Title: Systems Engineer SME
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
Seeking a Windows Systems Engineer with a minimum of 16 years' experience, a Bachelor's Degree, and significant experience with Trellix Security or other similar products.
Required Strong Engineering experience with the following:
• Demonstrated technical proficiency in cybersecurity operations, cybersecurity engineering, systems engineering and/or Windows and Linux systems administration
• Experience with
o Data Loss Prevention (DLP) including network monitoring and prevention
o Active Directory
o Trellix Endpoint Security (ENS)
o ePolicy Orchestrator (ePO)
o Endpoint Detection and Response (EDR)
o Threat Intelligence Exchange (TIE)
o Data Exchange Layer (DXL)
• Databases, Virtualization, Cloud Services [i.e., AWS, Azure]) and enterprise networks
• The aptitude and ability to develop expertise with Trellix products
• Familiarity with cyber threat identification, management, mitigation, and response strategies
• Planning and implementation of new architecture for services and replacement of old infrastructure for maintaining optimal performance
Preferred Education, Experience, & Skills:
• Writing technical documentation and briefings
• Leading and/or participating in technical exchange meetings
• Collaborating with end users as well as inter-agency, intra-agency, and internal Trellix stakeholders
• Leading or participating in certification and accreditation and/or access and authorization processes
• Leading or participating in deployment planning and execution
• Leading or participating in system configuration, tuning, and policy development
• Monitoring and managing system health, status, availability, and functionality
• Reporting on technical problems, operational problems, and end user/customer feedback
• Analyzing data and provide recommendations for solutions to operational and/or technical problems
• Leading or participating in technical troubleshooting efforts and problem resolution, including assessment, hands-on tasks, log reviews, performing triage tools, reviewing product documentation, and communicating with product support and development teams
Title: Systems Administrator SME
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
We are actively seeking candidates with a minimum of 16 years' experience, and a range of skill levels from basic to advanced. Bachelor's or Master's Degree are preferred in one or more of the disciplines described below where specific skills may include the following:
Key Responsibilities:
Systems Administration
• Provide Tier I & II support for enterprise systems and escalate advanced issues as needed.
• Troubleshoot server, operating system, application, and connectivity issues.
• Support daily operations, monitoring, maintenance, and upgrades for on-prem, virtual, and cloud systems.
• Document incidents, problems, and service requests using ServiceNow.
• Support asset management, inventory, and user onboarding activities.
• Maintain system documentation, SOPs, and operational guides.
• Deliver hardware within the WMA; limited travel required.
• Provide guidance and knowledge transfer to junior team members.
Quality Assurance & Testing
• Test and validate system builds, patches, and configuration changes across Dev/Test/Prod environments.
• Conduct functional, integration, regression, and post-deployment tests.
• Develop test documentation including Test Plans, Test Cases, Defect Logs, and Test Reports.
• Identify, log, and track defects through closure.
• Create test scenarios that include both expected outcomes and failure conditions.
• Perform smoke testing and pre/post-deployment validation for production releases.
• Identify risks or gaps early in development.
• Recommend areas for automated testing improvements.
Cloud & DevOps Support
• Validate deployments in AWS, Azure, and hybrid cloud environments.
• Verify IAM roles, access controls, and Zero Trust security configurations (ACLs, security groups, routing rules, firewall settings).
• Validate DNS paths, connectivity, and system availability after updates or builds.
• Confirm server build integrity through post-deployment checks (connectivity, logs, performance).
• Ensure systems remain available after certificate updates and patching.
Preferred Education, Experience, & Skills:
• Strong proficiency with:
• Windows Server 2016–2021
• Active Directory
• AWS and/or Azure
• Virtualized infrastructure
• ServiceNow or similar ITSM tools
•
Ability to work effectively within Agile teams including Developers, Technical Managers, Business Analysts, and Product Owners.
• Strong analytical ability, communication skills, and problem-solving capabilities.
• Ability to work independently and collaboratively.
• Experience mentoring or providing technical knowledge transfer.
Title: Software Engineer SME
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
We are looking for experienced Full Stack Software Developers to join our technology-based program supporting a key government customer. This program delivers Enterprise Computing engineering services with modern technology solutions with that function both on customer premise, and via remote Cloud services. As a mission-focused administrator that solves problems on the program, you will be expected to: recognize the issue(s), identify the facts, define additional data that would be helpful, make assumptions as necessary, determine alternative approaches, evaluate alternatives, make recommendations, alter assumptions and rework solutions, and reflect on lessons learned.
The Software Developer will develop new automation capabilities that utilize infrastructure as code best practices and establishes a continuous integration /continuous delivery pipeline.
Required Skills, Responsibilities and Experience:
• Minimum of 16 years of professional software development experience.
• Proficiency in Java and C#.
• Experience with modern frameworks and technologies such as React, Node.js, TypeScript, and .NET.
• Hands-on experience developing solutions in cloud environments (AWS, Azure, Google Cloud, or Oracle).
• Strong understanding of DevOps practices and related tools (e.g., Jira, GitHub, Jenkins), including pipeline development, release management, and orchestration.
• Proficiency with scripting languages, preferably Python or PowerShell.
• Experience developing in both Windows and Linux environments.
• Ability to work closely with stakeholders to gather requirements and deliver effective technical solutions.
• Experience architecting, implementing, and maintaining solutions within cloud environments (e.g., AWS or Azure).
• Strong documentation skills, including developing concepts of operations and standards of practice for tiered maintenance support.
• Ability to interface with senior leadership and provide regular status updates.
Preferred Education, Experience, & Skills:
• Ansible
• Powershell
• Java
• Microsoft Certified Engineer
• Microsoft Certified Architect
• Or other relevant vendor professional certifications, current within the last 3 to 5 years.
Title: Systems Engineer Expert
Location: Herndon, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
We are actively seeking Systems Engineer with a Bachelor's degree and a minimum of eleven (11) years' experience.
• Strong knowledge of Windows and Linux (RHEL based) operating systems
• Familiarity with system hardening, security hardening, remote desktop, patch management, and configuration management tools
• Experience supporting RMF or other accreditation frameworks (FedRAMP, NIST 800-53B, A&A, etc.)
• Proficiency in scripting languages such as PowerShell, Python, Bash, Apache Web Services
• Amazon Web services experience (EC2 instances, CloudFormation, S3 Storage, RDS (MySQL))
• Ability to work in a high profile fast-paced environment.
• Strong oral and written communication skills
• Conduct root cause analysis of noted system performance an operational issue.
• Monitor the performance systems to analyze the metrics produced to identify areas of improvements and report potential anomalies.
• Emergency after hours engineering support as needed.
• Communicate to both technical and non-technical audiences.
Preferred Education, Experience, & Skills:
• Database Administrator (DBA)
• Networking experience/ Automation
• API Engineer
• Experience working in air-gapped environments or with classified systems
• Experience with Agile methodologies and working in sprint-based development cycles
• Familiarity with security in CI/CD pipelines and container security (e.g., Docker, Kubernetes)
• Knowledge of zero trust architecture and identity/access management strategies
• Toolsets & Platforms:
• Security Tools: Splunk, Rapid 7
• Operating Systems: Windows Server, RHEL/CentOS, Ubuntu
• Compliance Tools: Rapid 7, Greenlight, Illuminate
• Cloud Platforms: AWS, Azure, GCP
• Automation/Scripting: PowerShell, Python, Bash, Ansible
• DevSecOps: Jenkins, Git, Docker, Kubernetes
• Soft Skills:
• Strong analytical and troubleshooting skills
• Excellent communication and documentation abilities
• Self-starter with ability to manage multiple tasks
Title: Network Engineer, SME
Location: Herndon, VA
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
We are seeking a Subject Matter Expert (SME) Level Network Engineer with a minimum of 16 years' of experience and a specialized focus on Network Access Control (NAC), particularly with significant expertise in CISCO network appliances and associated management software to join our technology-based program supporting a key Government customer. The ideal candidate will have a deep understanding of network security principles, excellent problem-solving skills, and a proactive approach to maintaining and optimizing endpoint validation.
Responsibilities:
• Subject Matter Expert (SME) Level design, implementation, and management of NAC solutions utilizing CISCO network devices including load balancers, LINUX servers, and CISCO appliances
• Perform configuration, maintenance, and troubleshooting of NAC policies and profiles
• Monitor network traffic for potential security threats and proactively address vulnerabilities
• Collaborate with cross-functional teams to ensure network security standards align with business objectives
• Stay up-to-date with the latest industry trends and best practices in network security and NAC technologies
• Provide technical support and guidance to internal and external teams and clients on NAC and network security related issues
• Participate in the evaluation and selection of new NAC technologies and vendors
Required Education, Experience, & Skills:
We are actively seeking Network Engineers with a minimum of 16 years' experience. Bachelor's or Master’s Degrees are preferred in one or more of the disciplines described below where specific skills may include the following:
• Ability to translate customer requirements into enterprise network solutions
• Proven SME level experience as a CISCO Network Engineer with a focus on Network Security
• Strong proficiency with NAC platforms
• In-depth knowledge of network protocols, TCP/IP stack, and OSI model
• Experience with firewall management software such as Cisco FTD
• Excellent communication and interpersonal skills
• Ability to work independently and collaboratively in a fast-paced environment
Preferred Education, Experience, & Skills:
• Knowledge of NAC management software such as Cisco Identity Service Engine (ISE) is high desired
• Industry certifications such as CCNA Security, CCNP Security, REDHAT Certified Architect (RHCA), or similar industry certifications are preferred
• Demonstrated experience with Network Access Controls (NAC), CISCO profiling ISE
• Experience with Linux Operating Systems (OS) and Python scripting
• Experience with a wide variety of network technologies and solutions architectures is a plus
• Broad understanding of technical principles, theories and concepts in the networking field
• Knowledge of state-of-the-art systems engineering principles and network design concepts
• Cloud Service Provider and hybrid cloud experience (extending on premise networks to cloud providers such as AWS, Azure, Oracle and Google)
• Strong proficiency with Network Access Control (NAC) platforms is a plus
Title: Network Architect SME
Location: Herndon, VA
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
A Bachelor’s or Master’s degree are preferred with a minimum of Sixteen (16) year’s relevant experience with the following skillsets:
• In depth knowledge of network architecture, design, and implementation
• In depth knowledge of specific network technologies such as routing and switching
o Familiar with routing protocols such as EIGRP, BGP, ISIS
o Familiar with switching protocols such as STP, LACP, VTP
• In depth knowledge of network automation
• Cloud networking (AWS, Azure, Google)
• Software-defined networking (SD-WAN)
• Ability to provide technical guidance and mentorship to junior engineers
• Experience with creating technical documentation such as designs, implementation plans, and technical notes
• Ability to brief designs to review boards
• Knowledge in deploying MPLS networks
• Ability to learn, understand and implement new technologies
• Independent learner with a proven ability to master complex technical concepts through self-study and practice
Preferred Education, Experience, & Skills:
• Adept in network engineering, with focus on design, implementation, and management of complex networks
• Experience with network architecture, design, and implementation in a large-scale environment
• Proven track record of successfully resolving complex network issues and improving network performance
• Willing to learn new technologies
Title: Systems Engineer (Voice)
Location: Dulles, VA
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Required Education, Experience, & Skills:
We are actively seeking Systems Engineers with a minimum of 3 years' experience. Undergraduate or graduate degree in computer science or computer engineering. Specific skills may include the following:
• Work in an enterprise IT environment with specific tasks related to Voice
• Collaborate with network engineering and other telecom engineers in integration activities involving telephony or call center
• Assist in the design, testing, and deployment of new voice infrastructure
• Support implementation of next-generation voice technologies
• Participate in the system security accreditation process
• Provide certificate management support for secure systems
• Assist with system upgrades, patching, and configuration
• Support new site voice system standups
• Support call center technology deployments, user training, and transition planning
• Contribute to call routing and trunking design within enterprise voice platforms
• Attend meetings with internal teams and clients to gather and understand voice system requirements
• Monitor compliance with established standards, policies, and procedures
• Gain hands-on experience with secure voice devices (e.g., VoIP phones, STEs, Viper) and infrastructure components (e.g., PBXs, encryption devices, call management servers)
• Learn to provide Tier 4 engineering support under supervision
• Learn and support platforms such as Skype for Business, Avaya Communication Manager, and other enterprise call center technologies
Preferred Education, Experience, & Skills:
• Linux
• SIP signaling and call flows
• Secure Real-Time Transport Protocol
• SIP
• TCP/IP
• H.323
• DNS
• DHCP
• RTP
Certifications
• MCSE certification
• A+ certification
• Network+ certification
• CCNA, CCNP, ITIL, CCIE, HP, CCVP, CCDP, CATE, R&S
• Cisco Voice certifications
• Juniper certifications
Title: Software Engineer
Location: Annapolis Junction, MD
Compensation Range: $170 – $190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description:
Seeking a Software Engineer to join the software development team who will develop and sustain integrated, feature-rich capabilities that promote modernization of visualization and presentation tools. The software development team will provide application development and support to tools that allow mission analytic users to view existing data or contribute new information in a collaborative environment.
Position Required Skills:
Familiarity with multiple of the following:
Desired Skills:
Required Education:
Individual Capabilities Required:
Title: Junior Systems Engineer
Location: Annapolis Junction, MD
Compensation Range: $160 – $180K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description:
The Systems Engineer supports the design, development, integration, and maintenance of complex technical systems, ensuring they operate reliably and meet organizational needs. This role works closely with cross‑functional teams to translate requirements into effective system solutions, troubleshoot issues, implement improvements, and maintain thorough technical documentation. The Systems Engineer evaluates system performance, supports lifecycle management, collaborates with vendors when needed, and ensures alignment with industry best practices. Strong analytical skills, attention to detail, and the ability to work in a dynamic technical environment are essential for success in this position.
Qualifications:
Responsibilities:
Title: Systems Engineer
Location: Annapolis Junction, MD
Compensation Range: $200 -$220K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.
Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
Position Description:
The Systems Engineer supports the design, development, integration, and maintenance of complex technical systems, ensuring they operate reliably and meet organizational needs. This role works closely with cross‑functional teams to translate requirements into effective system solutions, troubleshoot issues, implement improvements, and maintain thorough technical documentation. The Systems Engineer evaluates system performance, supports lifecycle management, collaborates with vendors when needed, and ensures alignment with industry best practices. Strong analytical skills, attention to detail, and the ability to work in a dynamic technical environment are essential for success in this position.
Qualifications:
Responsibilities: