• Senior Linux Systems…

    UIC Government Services and the Bowhead Family of Companies (Dahlgren, VA)
    **Overview** SENIOR LINUX ADMINISTRATOR (NETSERV)...to obtain and maintain a security clearance at the Top Secret level. US Citizenship is a ... Bowhead seeks a Senior Linux Administrator (NetServ) to join our team in Dahlgren, VA....we are a fast-growing, multi-million-dollar company recognized as a top Alaska Native Corporation providing services across the Department… more
    UIC Government Services and the Bowhead Family of Companies (09/17/25)
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  • Senior Linux Systems…

    ManTech (Chantilly, VA)
    **MANTECH seeks a motivated, mission-focused Senior Linux Systems Administrator to join our team in Chantilly, VA** This opportunity allows you to become ... to drive impactful solutions in support of critical government missions. As a ** Senior Linux Systems Administrator ,** you will help maintain and… more
    ManTech (08/30/25)
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  • Senior Linux /Unix Systems…

    SMX (Dahlgren, VA)
    Senior Linux /Unix Systems Administrator ...be able to obtain and maintain Top Secret + 6+ years' experience administering Linux /Unix ... Dahlgren, VA SMX is looking for a highly motivated Senior Linux /Unix Administrator to join...Secret clearance with ability to obtain and maintain Top Secret clearance + Networking protocols +… more
    SMX (09/03/25)
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  • Senior Systems Administrator…

    ICF (Reston, VA)
    …within the DC MD VA area We are seeking a highly skilled and customer-facing Senior Systems Administrator to support Linux and Windows environments for a ... **Public Trust clearance** . **Key Responsibilities:** + Maintain and administer Linux and Windows operating systems, ensuring system performance and security… more
    ICF (09/27/25)
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  • Linux System Administrator…

    Nightwing (Sterling, VA)
    …defense, civil, and commercial markets. Nightwing is seeking a highly motivated Systems Administrator to join a mature program in the Sterling VA location. The ... qualified Systems Administrator will support a very dynamic program in a...supporting mission critical networks and computer systems. CLEARANCE REQUIREMENT: TS /SCI with POLY Responsibilities + Assist with the design,… more
    Nightwing (09/26/25)
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  • Senior Systems Administrator II…

    V2X (Springfield, VA)
    …respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - active TS /SCI clearance to support our government ... required to be onsite. The position requires an active Top Secret /SCI clearance and the ability to...to obtain and maintain a Counterintelligence (CI) Polygraph. The Senior Systems Administrator II supports the information… more
    V2X (08/07/25)
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  • Network Systems Engineer - TS /SCI w/Poly

    Parsons Corporation (Mclean, VA)
    …to learning and applying new technologies. **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required for this ... to ensure seamless integration and optimal performance. + Collaborate with senior engineers and stakeholders to gather technical requirements and align solutions… more
    Parsons Corporation (09/09/25)
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  • TS /SCI DevSecOps Platform Engineer…

    Insight Global (Reston, VA)
    …- RHCE (Red Hat Certified Engineer) or RHCSA (Red Hat Certified System Administrator ) - Linux and Infrastructure Engineering certifications - CompTIA CASP+ or ... Job Description Insight Global is looking to hire a Senior DevSecOps Engineer in the Reston, VA area. On...RKE2 environments - Implementing and maintaining STIG compliance across Linux systems and Kubernetes clusters - Ensuring adherence to… more
    Insight Global (09/26/25)
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  • OCONUS Field Engineer - TS /SCI Polygraph…

    Leidos (Chantilly, VA)
    **Description** We are seeking mid to senior field engineers to join our international team in an exciting OCONUS location. The team is made-up of highly technical ... will have prior experience as either a systems engineer or systems administrator . Prior OCONUS experience and IP networking knowledge are desired. The program… more
    Leidos (08/08/25)
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  • Senior Specialist Systems Engineering…

    L3Harris (Springfield, VA)
    …security. Job Title: Senior Specialist, Systems Engineering - Information Technology Senior Systems Administrator (Active TS /SCI w/ CI Poly Required) ... Description: L3Harris Technologies is seeking an experienced Information Technology Senior Systems Administrator or Mid-to- Senior ...of 10 years of prior related experience. + Active Top Secret /SCI w Poly Security Clearance. +… more
    L3Harris (09/04/25)
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