• Senior Systems Administrator

    BigBear.ai (Annapolis Junction, MD)
    Overview BigBear.ai is seeking a Senior Systems Administrator with an active TS /SCI with Poly clearance to join and assist and meet mission needs for our ... and security + Support patching, upgrading, and migrating of Linux systems and VMs. + Support agile...Proficient with Linux . Minimum of 3 years Linux system administration experience (within the last… more
    BigBear.ai (12/30/25)
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  • Lead Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, mission-oriented **Senior Systems Administrator ** to join our team in **Chantilly, VA.** As the Lead Senior Systems ... limited to:** + Lead and supervise a team of system administrators (Windows/ Linux /VMWare) and IT support staff....or high school diploma/GED and 13 years of relevant systems administration experience with 3 + years in a… more
    ManTech (12/19/25)
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  • Systems Administrator

    KBR (Honolulu County, HI)
    Title: Systems Administrator Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology ... devices, and virtualization infrastructure. . Install, maintain, upgrade and configure systems (Windows/ Linux /VMWare/SQL Server, Horizon UAG, VDI) . Maintain… more
    KBR (12/04/25)
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  • Senior System Administrator

    Synergy ECP (Columbia, MD)
    Senior System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Company Description: Synergy ECP is a Service Disabled ... Experience with: o Configuration and Maintenance of Virtual Machines ? VCenter/VMWare o Linux and Windows operating systems ? CentOS, RedHat, Windows 10, Window… more
    Synergy ECP (01/14/26)
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  • Network Security Administrator

    TekSynap (Pensacola, FL)
    …, Cisco) + IAT LVL III (eg, GIAC, CISSP, CASP, CISM) + Must have Top Secret clearance **COMPETENCIES** + Network Security & Architecture + Cybersecurity & ... ofgeneral IT experience. + Must be **trained and certified on the specific Operating System or Computing Environment** theymaintain(eg, Windows Server, Linux more
    TekSynap (01/06/26)
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  • Systems Administrator 1

    Huntington Ingalls Industries (Wright Patterson AFB, OH)
    …Huntington Ingalls Industries, Technical Solutions Division (HII-TSD) is currently seeking a Systems Administrator . The ideal candidate works well in an agile, ... to perform identification, troubleshooting, and diagnosis of hardware failures and restore system capability to operations. + Provide administrator support (User… more
    Huntington Ingalls Industries (12/25/25)
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  • Systems Administrator

    ManTech (Fort Meade, MD)
    **MANTECH** seeks an experienced and passionate, career and customer-oriented ** System Administrator ** to join our team in Ft. Meade, MD. **Responsibilities ... and software in support of maintenance, developing and testing of information technology systems + Administration of Linux (ie, Redhat/Rocky 8) + Configuring and… more
    ManTech (12/28/25)
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  • Cross Domain Solutions Administrator (ONI)

    FGS, LLC (Suitland, MD)
    system and network troubleshooting, and system integration of Unix and Linux operating systems running on SPARC/x86 hardware supporting the ONI CDS ... Cross Domain Solutions Administrator (ONI) Suitland, MD **Requires US Citizenship** **Employment...all CDS systems + Installation, configuration and system hardening of Unix/ Linux operating systems more
    FGS, LLC (11/22/25)
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  • System Administrator

    ManTech (Fort Meade, MD)
    **ManTech** seeks an experienced and passionate, career and customer-oriented ** System Administrator ** to join our team located in the **Ft. Meade, MD** area. ... in computer operating systems **Clearance Requirement:** + Must have a current/active TS /SCI with Poly **Physical Requirements:** + Must be able to remain in a… more
    ManTech (11/03/25)
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  • Systems Administrator

    Lockheed Martin (Herndon, VA)
    …Conduct data archiving on an interval agreed upon with the Sponsor * Perform system hardening of Linux systems according to information security engineering ... **Description:** * Monitor the system 's logs and applications on a daily basis\....best practices * Maintain all server, including Windows servers, Linux servers, Oracle database servers, Apache servers, DNS servers… more
    Lockheed Martin (01/11/26)
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