• ForeScout Engineer - Active TS /SCI…

    ENS Solutions (Norfolk, VA)
    …maintenance of Forescout CounterACT appliances + 5+ years of experience performing systems administration for Windows or Linux , including performing basic ... security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge...center, WAN, and LAN in virtualized architectures + Active TS /SCI clearance; willingness to take a polygraph exam +… more
    ENS Solutions (12/06/25)
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  • Software Engineer / IDAM - Active TS

    ENS Solutions (Mclean, VA)
    …as Multi-Factor Authentication and Personal Identity Verification authentication + Experience with Linux based systems and Bash scripting + Ability to diagnose ... As a Software Development Engineer with a focus on Identity and Access...Bachelor's degree with 10+ years of experience. + Active TS /SCI clearance and ability to obtain and maintain a… more
    ENS Solutions (12/27/25)
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  • Endace Platform Engineer - Active TS

    ENS Solutions (Reston, VA)
    We are seeking a seasoned Endace Implementation & Sustainment Engineer to architect, deploy, integrate, and operate Endace packet capture, monitoring, and network ... strategies. This role owns the end-to-end lifecycle for Endace systems -including design, installation, configuration, maintenance, and long-term optimization-while integrating… more
    ENS Solutions (12/13/25)
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  • Cyber Asset Attack Surface Management Deployment…

    ENS Solutions (Reston, VA)
    …solutions for hybrid cloud environments + 3+ years of experience performing systems administration in Windows, Linux , or VMware environments, including ... and manage CAASM solution deployment in accordance with the systems engineering lifecycle (SELC). Monitor, design, and onboard new...APIs with their usage for data integration + Active TS /SCI clearance; willingness to take a polygraph exam +… more
    ENS Solutions (12/13/25)
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  • Lab Manager III

    ARSIEM (Arlington, VA)
    …management or systems administration experience. + 6+ years of experience as a Cloud Engineer , Linux Systems Engineer , or similar role. + Experience ... work with. ARSIEM is looking for an experienced Cloud Engineer with strong Red Hat Enterprise Linux ...Secret clearance and be able to obtain a TS /SCI clearance. Must be able to obtain DHS Suitability.… more
    ARSIEM (11/12/25)
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  • Senior Software Developer - TS /SCI…

    Leidos (Reston, VA)
    …**Required clearance:** Candidates for consideration **must possess an active and in-scope** Top Secret clearance with the ability and willingness to obtain ... Mission Solutions Business Area at Leidos seeks a Software Engineer to lead the creation of new software capabilities...test, simulation, and verification of software simulation or decision systems . A successful applicant will be able to write… more
    Leidos (12/21/25)
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  • Fidelis Administrator - Active TS /SCI…

    ENS Solutions (Reston, VA)
    …deployments and configuration management. + Experience as a network administrator or systems engineer . + Experience in using Active Directory to manage ... manage operating system and application software as necessary. Support Linux & Windows systems engineering efforts in...issues to ensure it remains fully operational + Active TS /SCI clearance; willingness to take a polygraph exam +… more
    ENS Solutions (12/27/25)
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  • Systems Engineer IV

    Noblis (Chantilly, VA)
    …server environments, and operating systems with special emphasis on Top Secret classification enclaves. Your extensive expertise in Nutanix hyper-converged ... changes to network hardware, infrastructure server environments, and operating systems in Top Secret environments....School diploma with 16 years of experience. + Active Top Secret ( TS ) clearance with… more
    Noblis (12/22/25)
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  • Linux Engineer

    Arena Technical Resources, LLC (Chantilly, VA)
    …VA, US Job ID: ATR 17717 Job Description Job Title: Linux Engineer Location: Chantilly, VA Eligibility: Top Secret /SCI clearance with current CI ... Systems Engineering team is seeking a driven Senior Linux /UNIX Systems Administrator that is highly technical...- Experience writing detailed, technical documentation -8570 Compliance -Active TS /SCI + CI Poly - Ability to respond to… more
    Arena Technical Resources, LLC (11/29/25)
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  • Systems Engineer III

    Noblis (Chantilly, VA)
    …server environments, and operating systems with special emphasis on Top Secret classification enclaves. Your experience in Nutanix hyper-converged ... Responsibilities As a ** Systems Engineer III** you will provide...School diploma with 14 years of experience. + Active Top Secret ( TS ) clearance with… more
    Noblis (12/22/25)
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