• Systems Administrator III

    Noblis (Chantilly, VA)
    …resolve critical incidents within designated resolution timelines Required Qualifications + Active Top Secret ( TS ) clearance with eligibility for Sensitive ... Responsibilities As a Systems Administrator , you will be responsible...web servers. You will support the multi-enclave environment (Unclassified, Secret , and Top Secret /SCI) that… more
    Noblis (12/30/25)
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  • Cleared Systems Administrator

    Colossal Contracting, LLC (Albany, NY)
    Cleared Systems Administrator Albany, NY (http://maps.google.com/maps?q=US+Hwy+Reservation+Atomic+Proj+Ballston+Spa+NY+USA+12020) * Engineering Description ... Colossal Contracting, LLC is looking for Cleared Systems Administrators to support a new team under our...an active DOE Q clearance or an active DOD Top Secret clearance at a minimum. This… more
    Colossal Contracting, LLC (11/12/25)
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  • Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include ... but are not limited to:** + Providing end-user support to personnel utilizing ITD IT systems . + Triaging help desk tickets for a broad range of service requests to… more
    ManTech (12/03/25)
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  • Systems Administrator /ISSO

    Tyto Athene (Santa Barbara, CA)
    **Description** Tyto Athene is searching for a ** Systems Administrator /Information System Security Officer** to join our CA team. **Responsibilities:** + Provide ... + Excellent communication skills. + Onsite support is required. **Clearance:** + Active DoD Top Secret or Top Secret /SCI clearance. Maintain active… more
    Tyto Athene (12/07/25)
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  • Associate Linux and Windows Systems…

    The Boeing Company (Tukwila, WA)
    …States (US) Infrastructure Organization is currently seeking an **Associate Linux and Windows Systems Administrator ** to join the team in **Tukwila, WA** or ... benefit for this position. **Security Clearance** This position requires an active US Top Secret Security Clearance (US Citizenship Required). (A US Security… more
    The Boeing Company (12/25/25)
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  • TSSCI Systems Administrator (Level…

    Insight Global (Louisville, CO)
    Job Description An aerospace company in Louisville, CO, is looking for a Top Secret Systems Administrator (Level 2) to join their growing classified IT ... You will be responsible for provisioning, installation and configuration, and maintenance of systems hardware and software. Their environment is a mix of Windows and… more
    Insight Global (11/22/25)
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  • 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 ... do + Manage customer's Risk Management Framework and related systems to ensure optimized performance and security + Support...security + Support patching, upgrading, and migrating of Linux systems and VMs. + Support agile activities for … more
    BigBear.ai (12/30/25)
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  • Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated and skilled **Senior Systems Administrator ** to join our sustainment team in **Chantilly, VA.** In this role, you will support a ... are not limited to:** + Provide hands-on O&M support for enterprise systems , including break-fix resolution and routine sustainment tasks + Monitor system… more
    ManTech (12/13/25)
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  • IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include but ... are not limited to:** + Providing end-user support to personnel utilizing ITD IT systems . + Triaging help desk tickets for a broad range of service requests to… more
    ManTech (11/19/25)
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  • Intermediate Classified Systems…

    The MITRE Corporation (Bedford, MA)
    …Department Summary: MITRE's Classified Enterprise Infrastructure is looking for a Junior Systems Administrator . A successful candidate will be delivering timely, ... in a high-stakes environment. + Experience with classified IT systems , including secure networks (eg, SIPRNet, JWICS), secure file...candidate to have a minimum of the following clearance(s): Top Secret This requisition requires the hired… more
    The MITRE Corporation (11/01/25)
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