• Principal / Sr. Principal DevOps Software…

    Northrop Grumman (Chantilly, VA)
    …protocols, etc.) + Knowledge and familiarity with using and building Windows and Linux Operating Systems + Demonstrated experience in documentation and process ... protocols, etc.) + Knowledge and familiarity with using and building Windows and Linux Operating Systems + Demonstrated experience in documentation and process… more
    Northrop Grumman (12/04/25)
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  • Cyber Network Security Engineer

    CACI International (Chantilly, VA)
    Cyber Network Security Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... **The Opportunity:** **CACI is seeking a talented Cyber Network Security Engineer to join our team in...of network/cyber security , penetration testing, and information security best practices** **Understanding of Linux network… more
    CACI International (12/02/25)
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  • Senior Security Operations Engineer

    Microsoft Corporation (Reston, VA)
    …+ Deep understanding of system internals and/or hardening in the following: Windows, Linux or macOS operating systems + Keep up to date on emerging ... procedures, analyzes specific aspects of attempted or successful efforts to compromise systems security . + Escalates findings as appropriate within agreed… more
    Microsoft Corporation (12/11/25)
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  • Senior Principal Cyber Security

    ManTech (Chantilly, VA)
    …, and virtual systems + Knowledge of Windows and Linux systems , general operating system security practices, TCP/IP networking, 802.1x, and network ... **MANTECH** seeks a motivated, career and customer-oriented **Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role… more
    ManTech (12/13/25)
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  • Principal Cyber Security Engineer

    ManTech (Chantilly, VA)
    …, and virtual systems + Knowledge of Windows and Linux systems , general operating system security practices, TCP/IP networking, 802.1x, and network ... **MANTECH** seeks a motivated, career and customer-oriented **Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role supports the… more
    ManTech (12/13/25)
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  • Systems Engineer - Subject Matter…

    Noblis (Chantilly, VA)
    …GovCloud, SC2S, C2S) implementation with security controls for classified workloads + Linux and Windows operating systems with security hardening for ... Responsibilities As a Systems Engineer SME, you will provide...Security accreditation processes (RMF, NIST 800-53) for TS/SCI systems + Advanced system monitoring and observability… more
    Noblis (12/03/25)
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  • Systems Engineer (Test Tool…

    KBR (Springfield, VA)
    Title: Systems Engineer (Test Tool Development and Automation) Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end ... contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape...based upon contract award. KBR is seeking a Mid-Level Systems Engineer to support government customers in… more
    KBR (12/11/25)
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  • System Engineer / IT Manager

    Serco (Herndon, VA)
    …years related to the job description listed above. + Active Certified Information Systems Security Professional (CISSP) Certification or in the process of ... Implementation Guides + Program management methods and Earned Value Management + LINUX operating system experience and CISCO Networking experience + Cloud… more
    Serco (12/12/25)
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  • Chief Unmanned Systems Robotics…

    Leidos (Arlington, VA)
    **Description** Leidos, a global technology leader, is seeking a Chief Unmanned Systems Robotics Engineer for our Sea Systems Business Area within our ... Vessels autonomous systems development. As Chief Unmanned Systems Robotics Engineer , you will play a...leading large engineering team in the development of Unmanned Systems US Citizenship & Security Clearance: +… more
    Leidos (10/09/25)
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  • Systems Engineer ( Engineer

    Huntington Ingalls Industries (Suffolk, VA)
    …Mission Technologies, a division of Huntington Ingalls Industries, is seeking a Systems Engineer to support the Joint Training Synthetic Environment (JTSE) ... in a fast-paced environment. Preferred Requirements * Experience managing Windows and Linux systems . * Background supporting classified enclaves, exercises, or… more
    Huntington Ingalls Industries (12/15/25)
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