• Senior Linux Systems Administrator

    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 part of ... impactful solutions in support of critical government missions. As a **Senior Linux Systems Administrator ,** you will help maintain and enhance the Sponsor's… more
    ManTech (08/30/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    **Description** The National Security Sector at Leidos is seeking a **Senior System Administrator ** to join a dynamic team based in **Tysons Corner, VA** . ... and maintenance of the Enterprise Linux infrastructure + Provide support in information security system requirements and design applicable to Linux hosts +… more
    Leidos (07/29/25)
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  • Linux Systems Administrator

    Parsons Corporation (Centreville, VA)
    …variety of open-source software and utilities + Experience managing FreeIPA or LDAP based systems + Background in Network Security , Intrusion Detection, and ... for. **Job Description:** Parsons is seeking a mid-level **Linux Systems Administrator ** . The candidate will support...+ Infrastructure monitoring and optimization + Plan and coordinate system outages and upgrades + Network monitoring… more
    Parsons Corporation (08/09/25)
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  • Tier 2 Systems Administrator

    CACI International (Springfield, VA)
    Tier 2 Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: ... We are seeking a skilled and motivated Tier 2 System Administrator to join our growing IT...be responsible for maintaining and troubleshooting mission critical IT systems , supporting end users, and ensuring the security… more
    CACI International (09/20/25)
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  • System Administrator - Active Secret…

    ENS Solutions (Norfolk, VA)
    …of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security , System Engineering, Program/Project Management, IT ... This role is contingent upon Contract Award The System Administrator supports secure and resilient...Viewer, eMASS, and HBSS is a plus. Benefits Essential Network Security (ENS) Solutions, LLC is a… more
    ENS Solutions (09/27/25)
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  • Exchange Systems Administrator SME

    Leidos (Alexandria, VA)
    …where you can thrive, keep reading!** **The Mission** Leidos is seeking an Exchange System Administrator to support a large enterprise IT contract for the DOD. ... service inquiries and problems. + Extensive experience working as a Tier 2 system administrator : familiar with using exchange/vault tools. + Extensive experience… more
    Leidos (07/23/25)
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  • NITE System Administrator IV

    Huntington Ingalls Industries (Virginia Beach, VA)
    …Technologies, click here for a short video: https://vimeo.com/732533072 Summary The System Administrator for the Navy Integrated Training Environment (NITE) ... The ideal candidate will work both independently and collaboratively to ensure system reliability, security compliance, and operational excellence. Why This Job… more
    Huntington Ingalls Industries (09/17/25)
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  • Senior Linux/Unix Systems…

    SMX (Dahlgren, VA)
    Senior Linux/Unix Systems Administrator (4419)at SMX(View all jobs) (https://www.smxtech.com/careers/) Dahlgren, VA SMX is looking for a highly motivated Senior ... Center Dahlgren Division (NSWCDD) in Dahlgren, VA. The Senior Systems Administrator will work as part of...and maintain Top Secret clearance + Networking protocols + Network security tools such as firewalls +… more
    SMX (09/03/25)
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  • Systems Administrator /Site…

    CACI International (Fort Belvoir, VA)
    …**Responsibilities:** + Responsible for resolving IT hardware and software infrastructure (servers, network , security , etc.) issues using systems analysis ... issues with IT infrastructure including systems , servers, storage, and network connectivity. + Provide system administration for assigned infrastructure and… more
    CACI International (08/29/25)
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  • Fidelis Administrator - Active TS/SCI…

    ENS Solutions (Norfolk, VA)
    …Framework. + Experience automating deployments and configuration management. + Experience as a network administrator or systems engineer. + Experience in ... of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security , System Engineering, Program/Project Management, IT… more
    ENS Solutions (09/27/25)
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