• Exchange Systems Administrator SME

    Leidos (Alexandria, VA)
    …+ Experience with server patch management methodologies utilizing SCCM **Clearance** + An active TS / SCI with polygraph is required for this position or TS / ... you can thrive, keep reading!** **The Mission** Leidos is seeking an Exchange System Administrator to support a large enterprise IT contract for the DOD. This role… more
    Leidos (07/23/25)
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  • Windows Systems Administrator

    Leidos (Arlington, VA)
    **Description** We are currently seeking a Windows Systems Administrator to join the Compartmented Enterprise Services Office (CESO) effort. This program is ... be considered in lieu of degree. + **An active TS / SCI security clearance is required for this...Experience with support systems to include enclave Ethernet switches, storage area networks (SAN), and network attached storage more
    Leidos (07/18/25)
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  • Cloud Systems Administrator V

    Criterion Systems (Reston, VA)
    …experience. Additional experience may be considered in lieu of degree. + Must have TS / SCI with active (<= 6 years) polygraph. Will consider candidates with poly ... + Experience supporting security audits and testing events. Security Clearance Level + TS / SCI with Polygraph (current) Work Schedule + Full-time on-site at… more
    Criterion Systems (08/08/25)
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  • Senior System Administrator

    ManTech (Chantilly, VA)
    …;** to join our team in **Chantilly, VA** . A qualified Senior Systems Administrator will support a secure Windows-based Information System and will assist and ... tools (eg, Jenkins, Terraform). **Clearance Requirements:** + Must have a current/active TS / SCI w/Polygraph. **Physical Requirements:** + The person in this… more
    ManTech (09/01/25)
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  • Linux System Administrator

    Nightwing (Arlington, VA)
    …and vulnerabilities. **Required Skills:** - US Citizenship - Must have an active DoD Secret clearance, TS / SCI clearance is preferred. - Must be able ... Engagement Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design, development, and deployment of advanced cybersecurity… more
    Nightwing (08/28/25)
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  • Senior Oracle Database Administrator

    ManTech (Chantilly, VA)
    …to enhance their code and improve performance. **Clearance Requirements:** + An active TS / SCI with Polygraph **Physical Requirements:** + Use hands to operate a ... **ManTech** seeks a motivated, career and customer-oriented **Senior Oracle Database Administrator ** to join our team in **Chantilly , VA** The **Senior Oracle… more
    ManTech (09/13/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    …procedures (startup/shutdown, backup, upgrade) **Required Clearance:** Active and in-scope TS / SCI with polygraph required for consideration. US citizenshipis ... Security Sector at Leidos is seeking a **Senior System Administrator ** to join a dynamic team based in **Tysons...system health and status of medium to large scale storage and processing systems + Storage maintenance… more
    Leidos (07/29/25)
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  • Linux System Administrator -Senior Level

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

    ManTech (Reston, VA)
    …locations as well as overseas travel **Clearance Requirements:** + Must have a current/active TS / SCI w/ Poly **Physical Requirements:** + Must be able to be in ... **ManTech** seeks a motivated, career and customer-oriented **Mission Support Administrator ** to join our team in the **Reston, VA** location. This is an onsite… more
    ManTech (09/01/25)
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  • Senior Database Administrator

    ManTech (Chantilly, VA)
    …and CM practices **Clearance Requirements:** + Must possess a current and active TS / SCI security clearance with Polygraph **Physical Requirements:** + The person ... MANTECH seeks a motivated, career and customer-oriented **Senior Database Administrator ** to join our Data and AI Practice. This position requires full-time on-site… more
    ManTech (08/21/25)
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