• Mid/ Senior System Administrator

    Belay Technologies (Annapolis Junction, MD)
    …in 2020 and a finalist in 2021! Belay Technologies is seeking a System Administrator (SA) to join our intel team. The SA provides support for implementation, ... improve reliability and performance. Candidates should have the following qualifications: + TS /SCI with polygraph is required. + Bachelor's Degree in a technical… more
    Belay Technologies (11/19/25)
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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 ... ability to obtain one within 180 days. + Experience with Windows and Linux operating systems. + Experience providing help-desk end-user support for common desktop… more
    ManTech (12/03/25)
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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 ... and implement standard operating procedures and technical documentation. Required Clearance: TS /SCI with FS Polygraph Required Skills and Experience: * Bachelor's… more
    Synergy ECP (10/15/25)
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  • System Administrator

    Assertive Professionals (Chantilly, VA)
    System Administrator About the Organization Established in 2015,AssertiveProfessionals(AP), is anEconomically Disadvantaged Woman Owned Small Business ... for itself within the Defense Contracting community taking 15th place in America's Top 100 Small Business Visionaries for the 2018 Best of Small Business Awards,… more
    Assertive Professionals (10/09/25)
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  • HBSS Administrator

    Leidos (Fort Belvoir, VA)
    **Description** Leidos is seeking a skilled ** Senior HBSS Administrator in Fort Belvoir, VA** to join the I3TS team supporting DTRA. The I3TS program provides ... their Endpoint Security with experience in Trellix and Microsoft Defender. Administrator will also be responsible in applying Security Technical Implementation… more
    Leidos (12/03/25)
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  • Cloud System Administrator

    DCCA (Annapolis Junction, MD)
    …competitive compensation and benefits package. Visit our website at: www.dcca.com Cloud System Administrator Candidate must have an active TS /SCI w/ Poly For ... Cloud System Administrator Location Annapolis Junction, MD Job Code 2063...constructive feedback, and receive technical guidance and advice from senior -level technical resources. . Shall have demonstrated a willingness… more
    DCCA (11/17/25)
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  • GCCS-J System Administrator

    Venatore LLC (Tampa, FL)
    …to higher tiers when needed. + Support configuration activities and system updates under senior oversight. Linux / UNIX Systems Support + Perform routine ... Overview Venatore is seeking a Tier 1 GCCS-J Systems Administrator to support CENTCOM under CITS at MacDill AFB....cybersecurity policies and security requirements. Required Qualifications + Active TS /SCI + Hands-on GCCS-J experience + Linux more
    Venatore LLC (11/26/25)
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  • Mid System/Network Administrator

    Belay Technologies (Laurel, MD)
    …up in 2020 and a finalist in 2021! Belay Technologies is seeking a Senior System/Network Administrator . The Systems Administrator (SA) provides support for ... experience may be substituted for a bachelor's degree + TS /SCI with poly The Level 2 System/Network Administrator...experience in trouble-shooting IT systems + Configure and manage Linux , UNIX and Windows (or other applicable) operating systems… more
    Belay Technologies (12/08/25)
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  • Systems Administrator

    Belay Technologies (Annapolis Junction, MD)
    …to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies seeks a Senior System Administrator (SA) to join our Intel team. You will play a key ... role in supporting and optimizing IT systems across Linux , Windows and VMware environments. You'll provide critical troubleshooting, enhancing system performance,… more
    Belay Technologies (11/19/25)
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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. ... environments (VMWare ESX, VCenter Administration) + Experience in administration of Linux /Windows + Experience configuring and maintaining storage and file systems… more
    ManTech (11/03/25)
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