• Systems Administrator - TS/SCI with Poly

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking an experienced **Systems Administrator ** to join our team in supporting mission-critical IT infrastructure. This role is ideal for ... particularly in pipeline automation and/or VMware environments across Windows and/or Linux platforms. You will work in a collaborative, high-security environment,… more
    Leidos (01/01/26)
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  • Systems Administrator

    Arena Technical Resources, LLC (Springfield, VA)
    Systems Administrator Location: Springfield, VA, US Job ID: ATR 17769 Job Description Job Title: Systems Administrator Location: Springfield, VA Eligibility: ... or similar support role. - Working knowledge of Windows and Linux server administration and basic understanding of networking, storage, and virtualization.… more
    Arena Technical Resources, LLC (01/01/26)
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  • Junior Systems Administrator

    Amentum (Mclean, VA)
    **Amentum** is looking for a **Junior Systems Administrator ** to join our team in **McLean, VA** ! As a Junior Systems Administrator , you will be responsible for ... when needed + Respectable understanding of operating systems like Windows, and Linux + Understanding Basic Networking fundamentals (IP addressing, DNS, firewalls) +… more
    Amentum (01/01/26)
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  • Lead Windows Systems Administrator

    General Dynamics Information Technology (Chantilly, VA)
    …experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead Windows Systems ... Administrator to oversee the design, operations, and maintenance of...to accredit systems for operational readiness. Additional Skills (Preferred): Linux OS knowledge. Experience with Tanium. Education & Experience:… more
    General Dynamics Information Technology (12/29/25)
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  • Sr. Administrator (Azure, OpenShift)

    System One (Alexandria, VA)
    Job Title: Sr. Administrator Location: Alexandria, Virginia Type: 6 + months Contract To Hire Contractor Work Model: Onsite (with some flexibility) Security ... Clearance US Citizenship Required We are seeking a Sr. Administrator with strong hands-on experience in Microsoft Azure and...as Okta, Kerberos, or SPNEGO. + Working knowledge of Linux (RHEL preferred). + Red Hat OpenShift certifications or… more
    System One (12/26/25)
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  • Network Administrator

    Nightwing (Sterling, VA)
    …intelligence community, defense, civil, and commercial markets. Job Title: Network Administrator Location: Sterling, VA Clearance: TS/SCI Poly **This position is ... CONTINGENT upon contract award** The Network Administrator (NA) collaboratively works closely with the leadership, CPM/CPO, FE SRE and Product Team (Platform) to… more
    Nightwing (12/26/25)
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  • Sharepoint Administrator

    BCMC (Arlington, VA)
    …assist with the restoration of services. We are seeking a Sharepoint Administrator to support the design, development, and deployment of advanced cybersecurity ... 5+ years of directly relevant experience as a Sharepoint Administrator . - Familiarity with JavaScript, HTML5, CSS, XML, jQuery,...with Windows Server OS, IIS, AD, #.NET, Word Press, Linux . - Must be able to work collaboratively across… more
    BCMC (12/23/25)
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  • Secret Cleared Database/Cloud Administrator

    Insight Global (Arlington, VA)
    Job Description The Cloud Administrator is responsible for managing and optimizing the organization's cloud-based platforms and hybrid security environments. This ... IT service management methodologies. * Experience administering RedHat Enterprise Linux (RHEL) versions 6-9. * Hands-on experience implementing Microsoft Sentinel… more
    Insight Global (12/23/25)
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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 Administrator , ... not limited to:** + Lead and supervise a team of system administrators (Windows/ Linux /VMWare) and IT support staff. + Design, implement, and maintain VMware vSphere… more
    ManTech (12/19/25)
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  • Systems Administrator

    CACI International (Hampton, VA)
    Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of ... Continental US * * * **The Opportunity:** CACI is seeking a cleared Systems Administrator in Hampton, VA. This is an immediate need to support the Distributed Ground… more
    CACI International (12/18/25)
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