HPC Software Engineer
Colorado Springs, CO
Active TS/SCI with Polygraph
Salary Range: $140,000 – $230,000
We are seeking a mid-career level HPC Software Engineer that will work in a High Performance Computing (HPC) Research and Development (R&D) customer contract. The candidate will be an active member of the Technical User Support (TUS) team, interacting with the team, TUS team lead, program Chief Scientist, Customers, users, and site staff while on-site with a specific R&D customer.
The TUS team is responsible for working with HPC users to achieve faster “time to science”. You will work closely with the users to port, optimize, and parallelize codes to the users’ requirements.
You will mentor junior members of the TUS and broader HPC teams, providing technical guidance, code‑review sessions, and career‑development advice. You will also design and deliver training workshops, tutorials, and documentation to help end‑users and internal staff adopt HPC tools, best‑practice coding standards, and performance‑tuning techniques.
This position will be on-site with a specific customer focused on their workflow, modeling and simulation, and data requirements and working with the program Chief Scientist, TUS team lead, and others to design and implement solutions to meet the customer’s requirements.
Basic Qualifications:
• Bachelor's degree in STEM related discipline and a minimum of 10 years of professional level experience
• Around 5 years of experience developing and using modeling and simulation software in heterogeneous, multi-platform environments
• Working with HPC users workflow for mod/sim problems and GUIs
• Knowledge of High Performance Computing (HPC) environment and related technologies
• Demonstrated proficiency with Fortran, C, and/or C++
• Demonstrated proficiency with BASH and Korn
• Linux Operating System proficiency, ability to solve end-user computer system problems while working independently in a lab environment.
• Proficiency in basic software practices such as coding standards, unit testing, and configuration management
• Strong ability to analyze, debug, and maintain the integrity of an existing code base
• Experience designing and delivering training workshops, tutorials, or onboarding material for HPC users and internal staff
Desired Skills:
• Experience mentoring junior engineers or scientists, providing technical guidance, and conducting code review sessions
• Revision control software (CVS, SVN, Git)
• Build/install tools (e.g. CMake, Makefile, autoconf)
• Experience with Python and Perl
• GPU programming experience (e.g., CUDA, OpenCL)
• Agile process and JIRA
• AI/ML/Neural Networks experience
• Good organization skills to balance and prioritize work
• Superior programming skills and excellent attention to detail
• Strong communication skills a results-oriented team player, creative thinker, and problem-solver
Title: Software Engineer 1 (Backend Development & Test)
Location: Annapolis Junction, MD
Compensation Range: $150 – $170K
*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 developing, sustaining, and troubleshooting GHOSTGEM's software suite of applications. Software development activities include implementation, testing, and integration with other COTS and FOSS products, packages, and libraries.
Qualifications:
Master's degree in Computer Science or related discipline from an accredited college or university.
OR
Bachelor's degree in Computer Science or related discipline from an accredited college or university, plus two (2) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity
OR
Four (4) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Position Required Skills:
Position Desired Skills:
Title: Senior Network Analyst
Location: Hanover, MD
Compensation Range: $190 – 210K
Clearance: Active TS/SCI w/ 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.
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 *
Key Skills:
• Experience with NSA data repositories such as XKEYSCORE, DX, and related systems
• Experience operating collection front‑end systems, including AST‑557, Packet Raptor, AST‑128, and similar platforms
Qualifications:
• Minimum 10+ years of network analysis experience, including non‑IP networks
• 10+ years of experience with telecommunications, network management systems, and network management protocols
Responsibilities:
• Perform network analysis across non‑IP networks, telecommunications systems, and network management protocols
• Utilize basic data processing and scripting skills (Perl, Python, or equivalent tools)
• Use Wireshark, Renoir, and other protocol/packet analysis tools
• Research and apply telecommunications standards, including ITU‑T Recommendations and IETF RFCs
• Collaborate across multiple technical disciplines (signals analysts, protocol analysts, hardware developers, intelligence analysts)
• Produce technical writing and requirements documentation for ANR developers and external development teams/vendors
• Work with NSA data repositories (BLACKPEARL, XKEYSCORE, NKB, etc.)
• Operate collection front‑end systems such as AST‑557, Packet Raptor, and AST‑128
• Diagnose network protocols using outputs from NSA signals/protocol analysis tools (Wireshark, DVT, TAROTCARD, etc.)
Systems Engineer:
*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 *
Systems Engineer
Description
Seeking an experienced Systems Engineer with Intelligence Community experience to support the modernization of an existing systems engineering training program.
The selected candidate will be responsible for leading the technical refresh and redesign of a current week-long Systems Engineering training course. The existing course is outdated and requires a comprehensive review, update, and redesign to better align with current systems engineering practices, mission needs, and adult learning principles.
The Systems Engineer will serve as the primary technical subject matter expert for the course modernization effort and will collaborate closely with internal instructional systems designers, multimedia specialists, graphics professionals, and other stakeholders to produce an updated, engaging, and mission-relevant training product.
The Systems Engineer will be responsible for:
Qualifications
Candidates must possess:
Desired Qualifications:
The ideal candidate will also have:
Prior experience serving as a technical instructor, course developer, curriculum SME, training lead, or workshop facilitator.
The position is located in Chantilly, VA.
Title: Lead Cyber Systems Engineer
Location: Linthicum Heights, MD
Compensation Range: $230 – $250K
*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 *
Core Tasks:
Qualifications
Preferred Qualifications
Audiovisual Programmer
In this role, you will play a key part in delivering high-visibility projects by providing expert programming and architectural support for audiovisual systems. You will be responsible for ensuring successful outcomes for customers and end users, with a focus on Crestron equipment and environments. The ideal candidate will demonstrate strong proficiency in AV programming and system design, contributing to innovative and reliable solutions.
Position Responsibilities:
Basic Qualifications (Required):
Preferred Qualifications (Desired):
Audiovisual Systems Programmer
In this role, you will play a key part in delivering high-visibility projects by providing expert programming and architectural support for audiovisual systems. You will be responsible for ensuring successful outcomes for customers and end users, with a focus on Crestron equipment and environments. The ideal candidate will demonstrate strong proficiency in AV programming and system design, contributing to innovative and reliable solutions.
Position Responsibilities:
Basic Qualifications (Required):
Preferred Qualifications (Desired):
Audiovisual Service Technician
The Audiovisual Service Technician will provide end-user training, troubleshooting, and issue resolution to a variety of government customers. This role works closely with AV engineers, AV installation technicians, and other team members to ensure a smooth end-user experience across all AV systems.
Position Responsibilities:
Required Qualifications:
Desired Qualifications:
Audiovisual Service Technician
The Audiovisual Service Technician will provide end-user training, troubleshooting, and issue resolution to a variety of government customers. This role works closely with AV engineers, AV installation technicians, and other team members to ensure a smooth end-user experience across all AV systems.
Position Responsibilities:
Required Qualifications:
Desired Qualifications:
Title: Field Support Specialist
Location: Annapolis Junction
Compensation Range: $130 – 150k
*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:
We are seeking a skilled and detail-oriented Field Support Specialist to join our team. The ideal candidate will have strong experience with providing hands-on support for Oracle hardware with Solaris and Linux Operating Systems.
Qualifications:
Key Responsibilities:
Sr. Cybersecurity Engineer
Reston, VA
Active TS/SCI with poly
As a Sr. Cybersecurity Engineer, you’ll play a pivotal role in safeguarding our organization's digital assets and sensitive information. The ideal candidate is a dedicated professional with a strong background in cybersecurity, a deep understanding of current threats and vulnerabilities, and the ability to implement robust security measures. As a Cybersecurity Engineer, you will contribute to the design, implementation, and maintenance of our cybersecurity infrastructure while staying abreast of emerging trends in the field
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:
Title: Data Engineer
Location: Herndon, Virginia
*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.
The Data Engineer will lead the data architecture and engineering delivery that enables AI/ML/GenAI solutions, ensuring data is trusted, secure, observable, and scalable from ingestion through consumption. You will design and operationalize modern data and retrieval foundations to support LLM-powered applications including patterns such as RAG, embeddings, vector search, and governed access to structured and unstructured data. You will be partnering with a team working with data science, ML engineering, and product stakeholders to translate use cases into production-ready pipelines and platforms with strong data governance, lineage, quality controls, and monitoring. This role blends hands-on technical ability with delivery management and team development, driving consistent engineering standards and measurable outcomes in client environments.
Bachelor's degree in Computer Science, Statistics, Data Science, Information Systems or related field.
6+ years of consulting experience leading delivery teams, including onshore and offshore team members
6+ years of experience gathering non-functional requirements and defining application architecture frameworks, including validation and testing deliverables
5+ years of experience working in an AI environment
5+ years of experience translating requirements into client ready design documents
5+ years of experience in software application architecture analysis, design, and delivery
5+ years of experience executing full system development life cycle implementations
Certifications in AI/ML technologies and Cloud platforms, such as AWS Certified Machine Learning – Specialty, Google Cloud Professional Machine Learning Engineer, Azure AI Engineer, Azure Data Scientist, or Azure Solutions Architect
5 + years of experience in Data Science, Statistics, and Machine Learning
5+ years of experience in Generative AI/LLMs, preferably experienced in delivering and productionizing
5+ years of experience in machine learning model development, natural language processing, and data analysis; Experienced in Supervised and Unsupervised learning, feature engineering, model training, and deployment
5+ year of experience in implementing cloud-based AI/ML workloads on any of AWS, Microsoft and Azure.
Title: Expert System Administrator (Virtual Infrastructure & Cluster Management)
Location: College Park, 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 *
Summary:
The System Administrator shall maintain existing customer network resources located XX miles from NSAW. Responsible for supporting servers, current hardware, storage, virtual infrastructures with VMs, new hardware, and resources. Responsible for day-to-day operations, creating/deleting VMs, security updates, troubleshooting, resolving issues, managing tickets (Jira). Familiar with automation tools and building of workflows. Responsible for keeping networks up-to-date utilizing industry best practices and be able to advise on system and network designs, mission architectures, and simplify and streamline network maintenance tasks.
Qualifications:
Fifteen (15) years’ experience as a SA, in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor’s degree.
Required Skills:
Desired Skills:
Title: Expert Software Engineer (Research & ML Model Development)
Location: Annapolis Junction, MD
Compensation Range: $250 – $270K
*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 develop, enhance, and prototype compliance and business processing analytics and tools. Develop new methods for automating compliance functions and improve existing methods. Contractor will investigate, integrate, and test compliance modernization Machine Learning/AI algorithms and research proof-of-concepts in the RD environment. They will develop models and implement appropriate metrics and monitoring of developed tools, functions, and data flows.
Qualifications:
Twenty (20) 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:
Title: Senior Software Engineer (Kubernetes Platform Engineering)
Location: Annapolis Junction, MD
Compensation Range: $210 – $230K
*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 Implement and manage multi-tier system based on Kubernetes and related container-based platforms. Assist researchers to containerize analytics on platforms. Familiar with how to accommodate data security, user authentication, and Agency Network Security compliance in systems. Assist researchers in transition from research supported platforms to Agency Corporate Systems.
Qualifications:
Fourteen (14) 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:
Title: Test 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:
Seeking a Test Engineer to support 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.
This Test Engineer will take ownership of the product release process, and should hit the ground running with automation improvements and regression testing. Should have experience with standard test processes, regression testing, automated testing (service and UI), Continuous Integrations pipeline, and release processes. Responsibilities also include development of test plans and procedures, documentation of test results, and development of special test code.
Position Required Skills:
Required Education:
Individual Capabilities Required:
Title: AI/ML Engineer
Location: Herndon, Virginia
*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.
Currently seeking a Software Engineer (Expert) in Herndon VA to work on a suite of services that will supply users with tools to automate a wide range of enterprise-wide applications and data centric mission management applications, with a focus on artificial intelligence and machine learning (AI/ML). The candidate will be part of a team of Software Developers, ETL Developers, and Data Scientists to enhance existing production applications and build out new web services on a routinized production cadence to meet the evolving needs of users. This role is focused on developing high-performance, distributed systems that operate on petabyte-scale structured and unstructured data, enabling mission users to rapidly access, process, and exploit critical information.
You will operate at the intersection of big data, distributed systems, and mission analytics, building core platform capabilities such as ingest pipelines, text extraction services, and search infrastructure that directly enable downstream analytics, AI, and operational workflows.
This is a hands-on technical leadership role for engineers who thrive on building scalable systems from the ground up, solving hard data problems, and delivering production-grade capabilities that operate in high-stakes, real-world environments.
This position will include a variety of activities, including:
Integrating AI/ML technology into a production web application.
Participation with iterative software development teams with adherence to all reporting requirements.
Designing, developing and unit testing code for a production system and demonstration capabilities.
Developing rapid prototypes to drive out requirements and design.
Providing demonstrations and detailed walk through of features to a variety of technical and non-technical audiences.
Meeting with stakeholders, analyzing requirements, developing user stories, and translating these into software development tasks.
Development of technical documentation and briefing materials to support program status reviews, control gates, and other presentations as directed.
Write and maintain technical documentation for application workflows, integrations, and compliance procedures.
Optimize and enhance application performance, ensuring scalability and security.
Demonstrated 4-6 years in backend development – must be proficient in both Python and Java
Demonstrated 4-6 years in frontend development like Angular
Demonstrated 6-8 years of AWS Architecture design proficiency
Significant proficiency 6-8 years in Linux – shell scripting, mounting drives, text editing with vi or emacs, system diagnostic checks [memory management, process running]
Demonstrated 2-3 years working with AI/ML development and data science understanding
Demonstrated experience on Agile software development teams following Agile methodologies, including Scrum and Kanban.
Demonstrated experience using Jira, Confluence, and GitHub for documenting work and team collaboration.
Minimum 6-8 years of experience with SQL and NOSQL databases
Minimum 6-8 years of demonstrated experience with development and deployment of applications in the Commercial Cloud Services (C2S) environment or an Amazon Web Services cloud environment.
Minimum 6-8 years of demonstrated experience with search & analytic tools. Examples to include ElasticSearch, Solr/Lucene, OpenSearch.
Minimum 2-4 years of demonstrated (Extract, Transform, Load – ETL) with large structured and unstructured raw data sets.
Minimum 6-8 years of demonstrated ability to design, develop, test and implement new applications based on project requirements.
The ability to work individually as well as the ability to work in project teams. Proven ability in decomposing concepts to discrete development tasks and managing your work to a deadline.
Minimum 6-8 years of demonstrated ability in microservices up to and including docker, podman, and or containerization services.
Minimum 6-8 years in Object Oriented programming. Python is preferred software development language
This position requires an experienced Interactive and Web-Based Services (User
Experience or UX) with excellent communication skills that will be responsible for gathering and documenting customer website needs and developing a new web environment. The officer will also migrate existing legacy content from an on-premises system into a cloud-based content management system. This administrator will establish templates to accommodate the content migration and provide standardization for individual department landing pages. This administrator will gather design options and provide proposals for front office review and approval, followed by development of the new inter (open)/intra (closed) website for CIMC. This officer will create and document administrative steps to assist departments with managing their own content in the future.
Additional duties/skills required:
Title: Systems Administrator/AWS Cloud Engineer/ Linux Engineer – Expert
Location: Warrenton, Virginia
*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.
Cornerstone Defense is expanding our System Administration team. We are seeking a highly skilled System Administrator/Cloud Engineer to enhance our existing technical team supporting the advancement of AI/ML/Data Science technologies in Warrenton, VA.
The successful candidate will be a self-motivated, innovative, cloud engineer to join in and contribute to a team environment. The candidate will be part of a team that supports the cloud infrastructure for an enterprise environment. This position requires a broad knowledge of system administration, knowledge of automation technologies, and scripting. This position also requires a knowledge of security and accreditation practices and procedures the ability to work with several enterprise resources and teams in the operation of an enterprise digitization infrastructure.
Mandatory:
• Must have hands-on experience with AWS and Linux in a production environment.
• Experience patching and maintaining system's databases, to include RDS, MySQL, and Oracle
• Proven experience troubleshooting and solving technical problems
• Knowledge of Federated Identity, RBAC, authentication & authorization solution, etc.
• Understanding of secure-cloud configuration, (e.g., CloudTrail, AWS Config), cloud-security technologies (e.g., VPC, Security Groups) and
Access Control (IAM).
• Experience with configuration management (e.g., Puppet, Chef, Ansible, CloudFormation, etc.)
• Experience with security, such as NGFW, WAF, SIEM, endpoint security.
• Ability to work in a fast-paced agile environment
• Bachelor's Degree in IT related field or equivalency in related work experience
• Demonstrated on-the-job experience working and solving technical problems independently as a system administrator.
• Experience using a scripting language.
• Demonstrated ability to monitor and troubleshoot enterprise workflow applications, to include: installing, starting, and stopping background, processes, analyzing log and event files, and patching and troubleshooting.
• Demonstrated ability creating and managing a virtual infrastructure, such as AWS, Azure, Hyper-V, or VMWare.
Optional:
• Experience with an enterprise application development language, such as Python, Java, or C#, to include writing simple applications or modifying existing ones.
Position: Technical Targeter
Location: Chantilly, 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 *
Description:
Duties And Responsibilities:
Desired Skills:
Education Requirement:
Experience Requirement:
Position: Technical Targeter
Location: Chantilly
Description:
Duties And Responsibilities:
Desired Skills:
Education Requirement:
Experience Requirement:
Title: Software Engineer
Location: Herndon, Virginia
*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.
Currently seeking a detail-oriented and experienced ETL Engineer to join our data engineering team. The ideal candidate will be responsible for designing, building, and maintaining data pipelines and integration processes that enable reliable, timely, and high-quality data delivery across the organization. This role requires strong technical capabilities, a deep understanding of data architecture, and the ability to collaborate effectively with cross-functional stakeholders.
The ideal candidate brings deep expertise in Natural Language Processing (NLP), large-scale data processing, and search/discovery systems, with the ability to lead technical teams and translate mission needs into scalable, production-ready capabilities that deliver operational impact.
Development will take place in an iterative fashion using Agile development methodology with input from all levels of stakeholders. The candidate must have the ability to communicate with project team members, user community, and leadership to assess changes and demonstrate iterative progress.
Key Responsibilities
Design, develop, and maintain ETL/ELT pipelines that support data warehouse, analytics, and application needs. Must be experienced with large data sets [hundreds of thousands of records, GB and TB size data sets]
Extract, transform, and load data from various sources into centralized storage solutions.
Design and enhance search and discovery platforms across large volumes of structured and unstructured data
Perform data ingestion, ETL, and integration across enterprise and multi-source environments
Optimize ETL workflows for performance, scalability, and reliability.
Conduct data validation, profiling, and quality checks to ensure accuracy and completeness.
Troubleshoot and resolve data inconsistencies, pipeline failures, or performance bottlenecks.
Build and maintain cloud-native solutions (AWS) aligned to secure and resilient architecture patterns
Partner with mission operators, analysts, and senior stakeholders to define requirements and deliver mission-relevant analytics
Translate mission needs into technical designs, architectures, and implementation roadmaps, ensuring alignment to operational objectives
Deliver clear, compelling visualizations, dashboards, and executive-level briefings that communicate analytic insights and recommendations
Provide technical leadership and mentorship, including hands-on development, code review, and team development
Own delivery of analytic capabilities from concept through deployment, accreditation, and sustainment
Support system accreditation, data governance, and security architecture, ensuring data integrity and compliance within classified environments
Mandatory:
Bachelor’s degree in Computer Science, Information Systems, Engineering, or related field (or equivalent experience).
Minimum 6-8 years working in Linux Operating system with updating the system for efficient parallel processing, understanding memory, storage and processing data at scale
Minimum 6-8 years in Object Oriented programming. Python is preferred software development language
Minimum 6-8 years of demonstrated experience with applications in the Commercial Cloud Services (C2S) environment or an Amazon Web Services cloud environment. Willing to consider substituting C2S if candidate has a minimum 4-6 years of cloud computing technology to include Azure, Oracle, Google, etc.
Minimum 4-6 years of demonstrated (Extract, Transform, Load – ETL) with large structured and unstructured raw data sets. Strong experience with ETL tools such as Informatica, Talend, SSIS, AWS Glue, or Azure Data Factory.
Proficiency in SQL, including complex queries and query optimization.
6-8 Years of experience with AWS platform including understanding EC2, RCS instance types
Strong understanding of data warehousing concepts, data modeling, and schema design.
Hands-on experience with scripting languages such as Python, Bash, or PowerShell.
Familiarity with relational and NoSQL databases.
Experience using version control systems such as Git.
Optional:
Experience working with big data technologies (e.g., Spark, Hadoop, Databricks).
Experience with transformer-based models (e.g., BERT) and modern NLP architectures
Background in document exploitation, e-discovery, or large-scale search platforms
Experience with multi-modal analytics (OCR, image recognition, text + image fusion)
Familiarity with search technologies (Solr, Elasticsearch, Lucene)
Experience with containerization and DevSecOps pipelines (Docker, CI/CD)
Cloudera or similar big data certifications
Experience developing risk scoring, anomaly detection, or predictive analytic models
Position: ServiceNow Administrator/ Developer
Location: Annapolis Junction, MD
Clearance: TS/SCI w/ Polygraph
Pay Range: 170- 195K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through advanced intelligence, satellite, and cyber technologies. Our Intelligence Sector provides support and solutions for information collection, operations, exploitation, dissemination, and research activities. Our specialists focus on software development, cloud architecture, systems engineering, and network engineering across key DoD and Intelligence Community organizations.
The job duties are as follows:
Join a team designing architecture and developing solutions that support organizational needs. We are seeking an innovative, motivated professional to contribute to a highly skilled team operating in a hybrid cloud environment. The ideal candidate will have strong hands-on technical experience; AWS experience is a plus. We value a collaborative team environment and a commitment to continuous learning and professional growth.
Requirements:
Ten (10) years experience as SA in programs and contracts of similar scope, type, and complexity is required. Bachelor's degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor's degree. Compliance with DOD 8570.01-M with a minimum certification of IAT Level II. (CCNA – SECURITY; GICSP; GSEC; Security +; SSCP)
Job Responsibilities:
Required Skills:
Desired Skills:
Position: Security Tools Integration Specialist
Location: Annapolis Junction, MD
Clearance: Active TS/SCI w/ Polygraph needed to apply
Pay Range: 200 – 220K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of many different types of intelligence, satellite, and cyber technologies. Cornerstone’s Intelligence Sector provides solutions to the United States Government for information collection, operations, exploitation and dissemination, and research activities. Our Team specializes in software development, cloud architecture, systems and network engineering, systems integration, agile management, as well as targeting operations and intelligence analysis. Our support to our mission customers includes cyber network operations, exploitation and defense, signals intelligence, human intelligence, and critical missions and networks.
Position Description:
We are seeking a highly motivated Security Tools Integration Specialist to join a small, agile cybersecurity team. This role is responsible for the deployment, integration, maintenance, and optimization of security tools that support continuous monitoring and compliance efforts. The ideal candidate is technically strong, self-driven, and comfortable working both independently and collaboratively in a fast-paced environment.
Requirements:
Fourteen (14) years experience as a SE in programs and contracts of similar scope, type and complexity is required. Bachelor's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required. Five (5) years of additional SE experience may be substituted for a bachelor's degree. Certifications: Compliance with DoD 8570.01-M with a minimum certification of IAM Level I (SEC+)
Key Responsibilities:
Required Skills:
Desired Skills:
Position: Systems Administrator
Location: Annapolis Junction, MD
Clearance: TS/SCI w/ Polygraph
Pay Range: 170- 195K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through advanced intelligence, satellite, and cyber technologies. Our Intelligence Sector provides support and solutions for information collection, operations, exploitation, dissemination, and research activities. Our specialists focus on software development, cloud architecture, systems engineering, and network engineering across key DoD and Intelligence Community organizations.
The job duties are as follows:
Work in an environment where you can help design the architecture and develop solutions to meet organizational needs. Looking for an innovative, and motivated individual to join a small, talented, and hardworking Linux team in a hybrid cloud environment. This team creates, maintains, and troubleshoots Linux instances on multiple networks, in multiple architectures.
The ideal candidate will have hands-on Linux administration and scripting automation experience with knowledge of AWS Cloud technologies is a plus. Candidate must work well in a small team setting, have a desire to automate processes where possible, and a willingness to think outside the box to find solutions.
Requirements:
Ten (10) years experience as a SA in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor’s degree. Certifications: Compliance with DoD 8570.01-M with a minimum certification of IAT Level II (SEC+, CCNA)
Required Skills:
Desired Skills:
Title: Web Developer
Location: Annapolis Junction, Maryland
Clearance: TS/SCI w/ Polygraph
Pay Range: 125 -140K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of satellite, launch, and cyber technologies. Cornerstone’s Cyber Sector develops and supports solutions for computer network operations, including exploitation, defense, signals intelligence, and information technology missions. Supported organizations include the National Security Agency, the Defense Information Systems Agency (DISA), Aberdeen Proving Ground, the Federal Bureau of Investigation, and several commercial entities.
You will join a small, hardworking development team building and supporting enterprise web-based services deployed in AWS. This is an entry-level role with close mentorship, clearly scoped tasks, and an emphasis on learning good engineering habits.
Requirements:
No demonstrated experience is required. Bachelor's degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of SWE experience on projects with similar software processes may be substituted for a bachelor's degree. Compliance with DOD 8570.01 with a minimum certification of IAM Level I. (CAP, GSLC, Security +)
Responsibilities:
Required skills:
Professional work, academic, or personal-project experience (samples will be required for academic and personal projects) with one or more of the following:
– PHP
– Net C#
– Java
– Node.js
– Python
– HTML
– CSS
– JavaScript
– Vue.js
– React
Desired skills:
Title: Web Developer
Location: Annapolis Junction, Maryland
Clearance: TS/SCI w/ Polygraph
Pay Range: 190 – 210K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of satellite, launch, and cyber technologies. Cornerstone’s Cyber Sector develops and supports solutions for computer network operations, including exploitation, defense, signals intelligence, and information technology missions. Supported organizations include the National Security Agency, the Defense Information Systems Agency (DISA), Aberdeen Proving Ground, the Federal Bureau of Investigation, and several commercial entities.
You will contribute as a core engineer on a small team delivering enterprise web services deployed in AWS. This mid-level role expects you to take ownership of features end-to-end, contribute to design decisions, and improve reliability and maintainability across multiple applications.
Responsibilities:
Required skills:
Professional work experience with one or more of the following:
– PHP
– .Net C#
– Java
– Node.js
– Python
– HTML
– CSS
– JavaScript
– Vue.js
– React
Desired skills:
Title: Software Engineer 3 (Atlassian Platform 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 designing, developing, and maintaining Tools and Services in support of the Atlassian’s suite of products (such as Jira, Confluence) collectively known as SUBURBANDEVELOPMENT. The Software Engineer shall work closely with cross-functional teams including software developers, system administrators, project managers, and mission customers to deliver seamless integrations that enhance productivity and streamline workflows.
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:
Position: Database Administrator
Location: Annapolis Junction, MD
Clearance: Active TS/SCI w/ Polygraph needed to apply
Pay Range: 170- 200K
Company Overview:
Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of many different types of intelligence, satellite, and cyber technologies. Cornerstone’s Intelligence Sector provides solutions to the United States Government for information collection, operations, exploitation and dissemination, and research activities. Our Team specializes in software development, cloud architecture, systems and network engineering, systems integration, agile management, as well as targeting operations and intelligence analysis. Our support to our mission customers includes cyber network operations, exploitation and defense, signals intelligence, human intelligence, and critical missions and networks.
Position Description:
Looking for a self-motivated individual that wants to learn new skills as well as contribute to the growth and maturity of the processes used to support and maintain databases by a small, talented, and hardworking database administration team. This team creates, maintains, and troubleshoots Microsoft SQL Server and MariaDB databases on multiple networks using multiple architectures. The environment consists of databases hosted both in on-premise datacenters and in cloud environments.
The ideal candidate will have hands-on experience creating, maintaining, patching and troubleshooting issues related to Microsoft SQL Server databases, knowledge of AWS Cloud technologies, works well in a small team setting, has a desire to automate processes where possible, and a willingness to think outside the box to find solutions.
Requirements:
Ten (10) years experience as a DBA in programs and contracts of similar scope, type, and complexity is required. Bachelor's degree in a technical discipline from an accredited college or university is required. Four (4) years of additional DBA experience may be substituted for a bachelor's degree. Compliance with DOD 8570.01-M with a minimum certification of IAT Level II. (CCNA – SECURITY, GICSP, GSEC, Security +, SSCP)
Required Skills:
Desired Skills:
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:
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.