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.
 

• Type: Contract
• Job #3793

Infrastructure Engineer
Aurora, CO
Active TS/SCI w/ Poly
Compensation Range: $95,000 – $115,000

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:
• You will leverage company and industry best practices and capabilities to design, deploy, implement, modernize, and support scalable network solutions
• You will support Network designs & development related activities, optimizing for performance and scalability across multiple computing environments
• You will utilize your Linux skills at the command line to deploy updates and change products for Cisco based network systems to support program needs
• You will provide guidance on network resource allocation, utilization, and optimization
• You must be a strong troubleshooter with experience in network issue mitigation as well as prevention
Basic Quals:
• Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 3 years of related work experience
• Experience with Linux System Administration (E.g. RHEL 6.0+)
• Experience with VMWare and related virtualized systems
• Comp TIA Security + within 90 days after starting in the role
• Current TS/SCI with CI Poly security clearance is required day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Preferred Quals:
• Advanced Experience configuring, deploying, and supporting network systems (E.g. Cisco, Cisco Nexus, Cisco ASA, Brocade)
• Experience Troubleshooting Layer 2 and Layer 3
• Experience with Firewall Implementation and knowledge
• Scripting in Python (preferred); Bash, Shell
• Experience integrating with identity management, access management, and authorization solutions (PKI, LDAP).
• Experience with Agile Development Methodologies (E.g.: Scrum, SAFe).
• Experience with scanning tools
• Basic Experience Using Automation Frameworks
 

• Location: Reston, Virginia
• Type: Contract
• Job #3784

Cloud Engineer I
Reston, 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 *

Overview:
We are seeking an experienced Cloud Engineer I to lead the design, implementation, and optimization of secure, scalable cloud solutions for mission-critical systems. In this role, you will architect and manage advanced cloud environments across multiple classification domains, ensure compliance with governance and security standards, and drive automation to enhance efficiency. You will collaborate with cross-functional teams to deliver innovative, high-performing cloud infrastructures that align with business and technical objectives.

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 assistance, 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.

Key Responsibilities:

• Cloud Architecture & Design – Lead the design and deployment of secure, scalable, and reliable cloud architectures aligned with industry best practices and security requirements.
• Emerging Technology Integration – Evaluate and adopt new cloud technologies, platforms, and methodologies to enhance performance and capabilities.
• Cloud Governance & Compliance – Develop and enforce governance strategies ensuring adherence to applicable standards, regulations, and security frameworks.
• Automation & Optimization – Oversee automation of deployment, monitoring, and management workflows using Infrastructure-as-Code tools to streamline operations.
• Security Implementation – Apply advanced security controls to protect cloud environments across multiple classification domains (e.g., IL5–IL6+).
• Technical Leadership – Serve as a subject matter expert on cloud engineering, mentoring peers and contributing to the organization’s technical community.

Required Qualifications:

• Experience: 4–7+ years of proven experience in cloud engineering, including large-scale AWS deployments across multiple classification domains.
• Technical Skills:
• Expertise in AWS services (EC2, S3, Lambda, EBS) and hands-on experience with AWS, Azure, or Google Cloud.
• Proficient in creating, managing, and securing server OS images (Linux and Windows Server) in cloud environments.
• Strong scripting and programming skills in Python and Bash.
• Advanced knowledge of Infrastructure-as-Code tools (Terraform, CloudFormation, Ansible).
• In-depth understanding of cloud security principles and hands-on security implementation experience.

• Certifications: Active CompTIA Security+ (or equivalent 8140/8570) with at least one year before expiration; AWS Solutions Architect Associate/Professional or AWS SysOps Administrator.
• Other Requirements: Experience working in operational environments managing ticket queues and leveraging knowledge bases for problem resolution; excellent communication skills for technical and non-technical audiences.

• Type: Contract
• Job #3782

Principal Integrated Product Team Lead
Indianapolis, IN
Active Secret
Compensation Range: $140,000 – $160,000

Job Responsibilities:

• Effectively work with, and communicate with, multiple levels of management, customers, and individual contributors on teams.
• Provide leadership and guidance to a cross-functional team, planning and coordinating engineering work
• Responsible for the technical fidelity and quality of the systems engineering work products and associated analyses that document the technical baseline.
• Assist in the development of solutions that meet customer requirements within cost, schedule, and quality constraints.
• Manage customer/stakeholder requirements and the decomposition of those requirements into product system requirements
• Plan system testing and the development and automation of test cases, scripts and execution

Basic Qualifications:
• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) or equivalent experience and a minimum of 8 years’ related experience in systems or project engineering or program management
 • Experience in project management or leading teams in product development across the program lifecycle
 • Experience as a Control Account Manager (CAM) and with implementing Earned Value Management (EVM)
 • Technical leadership and implementation experience with the avionics life cycle (requirements design, development, hardware and software integration, and/or requirements verification).
 • Experience with Agile and Dev[Sec]Ops principles and tools.
 • Demonstrated ability to effectively work with and communicate with multiple levels of management and individual contributors on teams.
 • The ability to obtain and maintain a U.S. government issued Secret security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Preferred Qualifications:
• Experience with Embedded SW (RTOS oriented SW development)
• Experience with Aviation COMM Suite, including UHF, VHF and SATCOM
 • Experience with DOORS, DOORS NextGen, model-based development in Cameo and/or SCADE, and developing cloud-based requirements  
 • Strong analytical and problem-solving abilities.
 • Experience with management of Government sub-contracts
 • Experience planning programs from the ground up
 • Experience in creation of Basis of Estimates (BOEs)
 • Project Management Professional (PMP) Certification
 • Familiarity with the V-22 aircraft and platform support processes
 • Experience with development lifecycle design reviews (Internal gates, SETRs, SOIs, etc.)
 • Master’s degree in an Engineering specialty
 • Experience in avionics development, integration and modernization programs

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 *

• Type: Contract
• Job #3744

Systems Engineer
Dulles, VA or State College, PA
Active TS/SCI
Compensation Range: $150,000 – $175,000

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:
• The senior systems engineer will execute multiple aspects of the systems engineering discipline, to include support of software development and test, requirements traceability into software functions, system performance analysis, and system integration and test activities to ensure system requirements achieve validation
• The system engineer will interact with the agile development teams regarding technical considerations, risks, and issue closure associated with the system capabilities and features
• The candidate must also possess the ability to multi-task, adapt to rapidly changing circumstances, effectively network, and communicate to the appropriate levels of the organization and support schedules and delivery milestones
Basic Qualifications:
• Typically requires a bachelor’s degree in science, Technology, Engineering, or Mathematics (STEM) and 5 years of prior relevant experience
• Experience defining system requirements for Agile software development and test teams, ensuring verification through acceptance criteria
• Engineering experience within the full systems and/or software engineering lifecycles
• Experience in system requirement creation and decomposition of capabilities into features with acceptance criteria using agile development tools like JIRA, CONFLUENCE, and JAMA
• An active TS/SCI security clearance is required prior to start date.
Preferred Qualifications:
• Familiarity utilizing Cloud environments, tools and utilizing associated processes and procedures
• Systems engineering experience in DoD architecture and service-oriented system architectures development program and platforms
• Experience using Model Based Systems Engineering (MBSE),
• Experience in performing Project Management
• Current Certification in Security +
• Experience with Containerized Application, Orchestration and Virtual Environments,
• Experience working in a DevSecOps environment, utilizing associated practices and procedures
• Experience working with RedHat Operating Systems
• Experience with Virus scanning application and execution
• Experience working with NIST 800-53, Privacy Framework and Cybersecurity Framework 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.
 

• Type: Contract
• Job #3699

Senior Linux Systems Administrator
Aurora, CO
Active TS/SCI with Poly
Compensation Range: $125,000 – $145,000

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:

• Supporting a program in a classified environment as a Linux System Administrator.
• Responsibilities include building, maintaining, and securing Information Technology systems and directly supporting customer mission-critical capabilities.
• You will work closely with program developers and system engineers to research issues, determine root causes and implement solutions to system problems.
• Must be able to support occasional after hour maintenance and on-call support and must be able to lift up to 35 pounds in support of hardware installations.
• Occasional travel may be required for installation support. This position is an onsite role.

Basic Qualifications:

•  Typically requires a Bachelor’s degree and a minimum of 5 years of prior relevant experience or a master’s degree and minimum of 3 years of prior relevant experience.
• Active and transferable U.S. government issued TS/SCI with poly security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Must have an active DoD 8570 IAT Level 2 certification (or higher) on start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND.
• Experience administering Red Hat Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardening

Preferred Qualifications:

• Using and developing with automation tools/frameworks such as Terraform, Ansible, and Chef as well as scripting – particularly in Bash and Python
• Experience administering Windows based systems
• Experience with pipeline tools such as Jenkins and Artifactory
• Demonstrated ability to work independently and troubleshoot problems with efficiency
• Deployment and administration of systems in Amazon WebServices (AWS)

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.
 

• Type: Contract
• Job #3698

Software Engineer
Aurora, CO
Active TS/SCI w/ Poly
Compensation Range: $125,000 – $140,000

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:

• Create both the front end for user to interface and the back end for processing and data storage
• Create solutions for continuous integration/continuous deployment pipeline and for scalability to meet surge demands
• Conduct exploratory data analysis on new sources of ISR data, creating discovery opportunities for optimization of AI and ML applications
• Create, maintain, and track the design of data pipelines utilized to streamline OPIR data ingestion, scale data streams, and develop predictive analytic products
• Standardize process, scalability with local teams, and monitoring and maintenance of operational metrics.
• Facilitate data collection, cyber security compliance, and communication
• Collaborate with cross-functional teams including data scientists, analysts, network engineers, and software engineers to understand data requirements and develop scalable data solutions
• Develop, maintain, and optimize ELT processes to ensure the timely and accurate movement of data from source systems to data warehouses and other storage solutions
• Oversee and maintain the day-to-day operation of Linux-based network servers, cloud-based environments, and virtual environments
• Implement, administer, and troubleshoot security, data recovery, and network infrastructure solutions

Required Skills:

• BS degree or six years applicable software experience.
• Demonstrated experience creating, implementing, and maintaining scripts for process automation, infrastructure monitoring, and proactive reporting (JavaScript/Python/Perl, etc.).
• Software development in JAVA and/or C++ within the context of the full software development lifecycle.
• Experience in a DevOps role and environment. Prior knowledge and implementation of Kubernetes.
• Prior experience supporting design, development, integration, and maintenance of new software functionality.

• Location: Reston
• Type: Contract
• Job #3331

Information System Security Manager
Clearance: TS/SCI with Polygraph
Reston, VA

Supporting the Most Exciting and Meaningful Missions in the World

 Cyber and Information Security Specialist (INFOSEC) perform functions in support of the directorate’s Information System Security Manager (ISSM) and deliver outcomes as follows:
 

• Review and analyze systems architecture diagrams and networks.
• Support Assessment and Authorization (A&A) requirements and process and apply ICD 503, NISPOM, and other federal guidelines in support of systems used at contractor facilities.
• Assist program systems owners and/or service providers throughout the risk management framework (RMF), including the assessment and authorization (A&A) processes, as follows:
  • Provide advice to program system owners and/or service providers on the creation of required system documentation or body of evidence; review and provide recommendation for approval or disapproval, as appropriate.  
  • Assess security and privacy controls and data protection in sponsor information systems and environments of operation as part of the initial security assessment and during operational changes affecting information systems’ security posture.
  • Assist the security control accessors (SCA), as appropriate, in performing security systems assessments and reviewing risk elements in the executive Risk System (ERS) report.
  • Create plans of action & milestones (POA&Ms) and/or request risk acceptance through a security assessor(SA) , who will certify the ERS report to the appropriate authorizing official (AO) or designated AO.
• Regarding the RMF and A&A processes, produce an annual A&A report of trends, challenges, and risk with recommended mitigation and process improvements.
• Provide oversight and guidance to ensure compliance with program information security regulations and policies on processes and request, such as Data Transfer Request; Access Request; Service/Change Request; Purchase Request; Accountable Property Management; Waivers, including medical devises and introduction (use) of equipment /devises into SCIF; and Equipment Transport.  Produce a Weekly Activity Report.
• Facilitate development, maintenance and security review of AIS security plans for computers, networks, and information systems deployed and used at contractor facilities, ensuring that sponsor and program approving signatures are acquired and documented.
• Conduct technical exchange meetings to facilitate AIS security solutions for both industrial contractors and government systems; and produce comprehensive solutions to technically complex systems and challenges.
• Ensure documentation is complete and accurate in accordance with sponsor and program AIS policies and requirements.
• As necessary, support the investigation of virus/malware alerts/incidents to determine root cause, entry point of code, damage risk, and report this information.
• Write reports based on technical analysis of sponsor or industrial partners systems, and as applicable provide recommendations for mitigating issues in the future.
• Analysis systems , including forensically, for malware, misuse, and/or unauthorized activity.
• Ensure discovered cyber incidents and data spills are reported per program SOP; support investigations and remediation/clean up as necessary, and provide guidance in coordination with program security management and other groups as appropriate.
• Provide information security training and refine, edit, and maintain training material, as necessary to ensure it is up to date with current policies, regulations, and best practices.
• Participate in project review meetings and provide technical cyber security advise/expertise to program personnel.
• Advise on technical and performance characteristics of new technologies, as relates to sponsor policies and regulations.
• Review complex sponsor and industrial partners system designs for security risk and compliance with sponsor policy and regulations; propose resolution and preventive strategies.
• Communicate complex technical concepts, project information, and security policy clearly and concisely to both technical and non-technical audiences.
• Provide briefings and/or training on sponsor’s INFOSEC policies and regulations.
• Provide a quarterly Security Control Status Report (SCSR) that identifies security risk and trends through the ranking of the 77 Control Families.

• Location: Reston
• Type: Contract
• Job #2528

Cyber Vulnerability Assessment & Analysis Officer
Clearance: TS/SCI with Polygraph
Chantilly, VA

Supporting the Most Exciting and Meaningful Missions in the World

 We are looking for a team-members with creative talent who are ready to take on the challenge of, Cyber Security Vulnerability A&A Officer to support at a sponsor facility. The Cyber Vulnerability A&A Officer is deployed to collocate with Sponsor’s offices, departments, or programs. The officer shall perform the following functions and deliver outcomes as follows: please keep reading…

Core responsibilities of the position include:

· Perform vulnerability assessment against system baselines to evaluate effectiveness of system configurations to include validation of system software, software patching and hardware configurations.

· Conduct compliance checks for patches on deployed program systems.

· Conduct vulnerability assessment to support sponsor with Assessment & Accreditation Security Policies & procedures, and compliance with ISSO/ISSM requirements and sponsor’s security regulations.

· Assure compliance with accreditation documentation in coordination with program ISSO/ISSM staff.

· Conduct Nmap port scanning as needed.

· Operate open source security tools, such as Nmap, or other applicable products approved and provided by the sponsor.

· Operate sponsor provided proprietary security tools such as Tenable Nessus, WebInspect, AppDetective, Rapid 7 Nexpose, RoadRunner, Greenlight, TEMIS, etc..

· Understand and operate network device implementations.

· Coordinate with ISSO on security incident response for Information Assurance concerns.

· Assist the sponsor with vulnerability assessment, including evaluation of specific configurations of program network devices and network enable software applications on both window and Linux platforms.

· Ensure program laptops are configured in accordance with sponsor’s Laptop Compliance Process, or current sponsor’s regulations/requirements by either completing configurations or by providing advice/resources of who can configure the laptop based on the customer’s office.

· Maintain the sponsor’s laptop security program, to include updating sponsor’s system of record and/or enduring responsible officers update the system of record.

· Develop and maintain a program that supports and encourages 100% laptop compliance providing options and standard operating procedures that account for mission requirements and a geographically distributed workforce.

· Provide ad-hoc security administration or communication security (COMSEC) support, as required.

Required experience:

· Minimum 6 years’ experience performing full range of Cyber A&A functions

· Relevant industry certifications

· Demonstrated ability to work independently with minimal guidance and in small dynamic teams often under time-constraints

· US government issued Top Secret/SCI security clearance required at time of application

· Must be a US Citizen at time of application

Preferred Qualifications

· 8 years’ experience working in the Cyber A&A field.

· Previous experience working within the customer space

· Proficient in Microsoft office suite of products

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 *