• 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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  • Production Security Engineer

    Meta (Reston, VA)
    Security Engineer Responsibilities: 1. Develop and deploy network automation systems and network security services for our production network. 2. Build ... Center, and Network Infrastructure Engineering teams and their designs to align security service capabilities to their requirements. 3. Develop and optimize tools… more
    Meta (09/30/25)
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  • Infrastructure Engineer T5

    CACI International (Sterling, VA)
    …accurate tracking in systems of record + Design and implement robust system security measures and ensure compliance with IT and customer policies and ... . The ideal candidate will bring extensive experience in system engineering, security compliance, escalation resolution, and...expert knowledge of UNIX, Linux , and Windows systems and networking + Coordinate system changes… more
    CACI International (12/11/25)
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