• Nightwing Group (Sterling, VA)
    …supports challenging, meaningful work that is vital to our national security, apply today! Principal Cyber Engineer Cyber Offense and Defense Experts ... (CODEX) is seeking a cyber engineer to join our team to solve real-time cyber challenges, working on site with our end users in their spaces. Applicants will… more
    job goal (01/13/26)
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  • EmergencyMD (Herndon, VA)
    Job Description: Senior Principal Cyber Systems Engineer (DevOps Engineer ) The selected candidate will integrate a variety of software components in a ... secure container architecture working with cross functional teams to debug critical issues. Candidate will also support the migration of containerized workflows from platforms such as Docker Swarm, Kubernetes (vanilla or managed) to OCP. Only Candidates with a… more
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  • EmergencyMD (Herndon, VA)
    A technology company is seeking a Senior Principal Cyber Systems Engineer to work in a DevSecOps environment. The ideal candidate will integrate various ... software components within a secure architecture and support the migration of workflows to OCP. Key responsibilities include developing CI/CD pipelines, troubleshooting integration issues, and collaborating with cross-functional teams. Required qualifications… more
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  • EmergencyMD (Herndon, VA)
    MUST HAVE AN ACTIVE TS/SCI WITH CI POLY CLEARANCE Software Engineer III Principal Cyber Software Engineer (Front End/UI-Focused) Experienced front-end ... software engineer to develop services using modern techniques such as REST, JSON, Python, JavaScript Web UI frameworks (eg, JQuery, Angular, React), and Docker. Candidate will perform test-driven software engineering and development activities associated… more
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  • Nightwing Group (Sterling, VA)
    A cybersecurity company in Dulles, Virginia is seeking a Principal Cyber Engineer to tackle real-time cyber challenges. This role involves developing ... native applications for mobile platforms, requiring candidates to have a TS/SCI clearance and at least 8 years of C/C++ experience on Unix/Linux systems. The ideal candidate will have strong skills in reverse engineering and a technical degree. Join us to… more
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  • EmergencyMD (Herndon, VA)
    A technology company is seeking a Software Engineer III Principal Cyber Software Engineer (Front End/UI-Focused) in Herndon, Virginia. The ideal ... candidate should have extensive experience in front-end development using modern technologies like Python and JavaScript, possess strong Agile methodology skills, and hold an active TS/SCI with CI poly clearance. Responsibilities include developing services,… more
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  • Atria Group LLC (Washington, DC)
    …brand and intellectual property (IP), networks, systems and applications. Principal activities include the following: Continually assesses activities, systems and ... applications for vulnerabilities that could be exploited and introduce risk to the security of the client. Continually assesses and aligns security resources with risks. Participates as requested with the liaison with law enforcement, governmental security and… more
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  • Via Logic LLC (Bethesda, MD)
    …has a new and exciting opportunity for a Principal Elasticsearch Systems Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area ... us and make a difference in National Security! Job Summary The Principal Elasticsearch Systems Engineer role provides support across an Agile team in a DevSecOps… more
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  • General Dynamics Corporation (Washington, DC)
    Network Cloud and Automation Senior Principal Engineer Responsibilities for this Position Location: Any Location / Remote Full Part/Time: Full time Job Req: ... This dynamic position at GDIT as a Network Cloud and Automation Senior Principal Engineer drives enterprise operational efficiencies through automation in cloud… more
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  • Leidos (Bethesda, MD)
    Leidos has a new and exciting opportunity for a PrincipalDevOps Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA) . Our ... us and make a difference in National Security! Job Summary This PrincipalDevOps Engineer role provides mission critical system support to our customer. You will… more
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  • Booz Allen Hamilton (Mclean, VA)
    Nuclear Engineer , Senior page is loaded## Nuclear Engineer , Seniorlocations: McLean, VAtime type: Full timeposted on: Posted Todaytime left to apply: End Date: ... 20, 2026 (30+ days left to apply)job requisition id: R0228233Nuclear Engineer , Senior**Key Role:**Apply nuclear weapons effects subject matter expertise to client… more
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  • TekSynap (Washington, DC)
    …in‑depth knowledge of IC ITE services. RESPONSIBILITIES The Information Systems Security Engineer is expected to be able to: Support Engineering and Operations ... security, etc.), program personnel, and Government security representatives. Serve as a principal advisor to the Government and service lane leads on all matters,… more
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  • Senior Principal Cyber

    Nightwing (Sterling, VA)
    …customers in the intelligence community, defense, civil, and commercial markets. **Sr. Principal Cyber Engineer ** Nightwing provides technically advanced ... challenging, meaningful work that is vital to our national security, apply today! ** Principal Cyber Engineer ** Cyber Offense and Defense Experts (CODEX)… more
    Nightwing (01/09/26)
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  • Principal /Sr. Principal

    Northrop Grumman (Fairfax, VA)
    …of the best work of your career. We are looking for you to join our team as a Principal Cyber Systems Engineer or Sr. Principal Cyber Systems ... meetings with external contractors/offices. This requisition may be filled at either a Principal Cyber Systems Engineer or Sr. Principal Cyber more
    Northrop Grumman (11/21/25)
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  • Principal Cyber Security…

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented ** Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role supports ... infrastructures across classified and unclassified environments. You will work alongside cyber experts to develop solutions that enhance network compliance and… more
    ManTech (12/13/25)
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  • Senior Principal Cyber Security…

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role ... include but are not limited to:** + You will engineer , design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment...+ A Bachelor's degree or 4+ additional years of cyber experience in lieu of a degree + 10+… more
    ManTech (12/13/25)
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  • Sr. Principal Cyber Software…

    Northrop Grumman (Chantilly, VA)
    …work of your career. **Northrop Grumman Mission Systems** is seeking an experienced **Senior Principal Cyber Software Engineer ** to join our team supporting ... at a Mission Systems Sector site in Chantilly, VA. As a Senior Software Engineer on the Mobile Development team, you will be responsible for the design, development,… more
    Northrop Grumman (10/21/25)
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  • Sr Principal Cybersecurity Analyst/Network…

    Northrop Grumman (Chantilly, VA)
    …join our diverse team of engineers, system administrators, and operators as a Sr. Principal Cyber Systems Engineer professional in Chantilly, VA. The ... but not limited to Standard Operating Procedures and VISIO diagrams. **Senior Principal Cyber Systems Engineer Basic Qualifications:** + Must have an active… more
    Northrop Grumman (01/01/26)
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  • Staff Cybersecurity Analyst / Information Systems…

    Northrop Grumman (Fairfax, VA)
    …to join our diverse team of engineers, system administrators, and operators as a Principal Cyber Systems Engineer professional in Chantilly, VA. The ... successful candidate will be expected to monitor, maintain, and provide Tier-2 and Tier-3 support of a mission critical network infrastructure, collect data for analysis, perform network upgrades, and be able to produce documentation and diagrams of the work… more
    Northrop Grumman (01/10/26)
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  • Principal Systems Engineer

    V2X (Springfield, VA)
    …challenges with integrity, respect, responsibility, and professionalism. We are hiring a Principal Systems Engineer - active TS/SCI clearance to support our ... ability to obtain and maintain a Counterintelligence (CI) Polygraph. The Senior-level Principal Systems Engineer shall lead a diverse, multi- disciplinary team… more
    V2X (11/25/25)
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