• Cybersecurity System Administrator - DMV

    M. C. Dean (District Of Columbia, DC)
    Overview MC Dean is seeking a highly skilled **Cybersecurity System Administrator ** to support a secure operational technology environment by integrating advanced ... within a Windows ecosystem. + Operate and manage jump (bastion) hosts for network segregation and secure remote access. + Coordinate with development and support… more
    M. C. Dean (11/26/25)
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  • Systems Administrator / Information Systems…

    Guidehouse (Arlington, VA)
    …Family** **:** Operational Effectiveness Consulting **Travel Required** **:** Up to 10% ** Clearance Required** **:** Active Secret **What You Will Do** **:** We are ... seeking a Systems Administrator / Information Systems Engineer in support of the...incorporate and maintain them on the Marine Corps Enterprise Network (MCEN). In this position, you will be required… more
    Guidehouse (01/08/26)
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  • Cross Domain Solutions Administrator (ONI)

    FGS, LLC (Suitland, MD)
    Cross Domain Solutions Administrator (ONI) Suitland, MD **Requires US Citizenship** **Employment Term and Type: Regular, Full Time** **Required Security Clearance ... compliance patching, software and hardware transitions, firmware updates, system and network troubleshooting, and system integration of Unix and Linux operating… more
    FGS, LLC (11/22/25)
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  • Senior System Administrator

    SAIC (Fort Belvoir, VA)
    **Description** The Senior System Administrator will provide support for operational intelligence integration and data-centric operations for customers across ... new standards, policies and procedures. Incumbent in this job works closely with Network and Systems Analysts to help determine and develop the systems that will… more
    SAIC (11/19/25)
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  • System Administrator

    Synergy ECP (Columbia, MD)
    System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Founded in 2007 and headquartered in Columbia, Maryland, Synergy ... a Deputy Program Manager for a contract located in Columbia, MD Clearance Required: TS/SCI w/ Polygraph + Provides support for implementation, troubleshooting and… more
    Synergy ECP (10/22/25)
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  • Secret Server Administrator - Active TS/SCI…

    ENS Solutions (Washington, DC)
    The Secret Server Administrator will perform a variety of functions supporting multiple Secret Server Deployments. Responsibilities include: tools deployment and ... [ formerly Thycotic] + Must possess an Active TS/SCI Clearance ; willingness to obtain a CI Poly + Must...DoD 8570 compliance with Information Assurance Technical (IAT) Level II certification. + Bachelor's degree in a technical discipline… more
    ENS Solutions (10/28/25)
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  • System Administrator Lead

    System One (Mclean, VA)
    Job Title: System Administrator Lead Location: Arlington, Virginia Type: Contract To Hire Contractor Work Model: Onsite Security Clearance : Top Secret w/ SCI ... JWICS, and Special Access Systems. * Support replication of network file share volumes via Distributed File System with...degree in an IT-related field Certifications: DoD8570.01M IAT Level II , VCP, and either the MCSE Core Infrastructure or… more
    System One (12/26/25)
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  • System Administrator

    CACI International (Laurel, MD)
    System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... and using IT systems + Provide Tier I (Help Desk) and Tier II (Escalation) problem identification, diagnosis and resolution of problems + Provide support to… more
    CACI International (11/20/25)
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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 ... environment by ensuring the continued health, performance, and compliance of complex network and system infrastructures. You will help drive key Operations and… more
    ManTech (12/13/25)
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  • Linux Systems Administrator

    ManTech (Laurel, MD)
    **MANTECH** seeks a motivated, career and customer-oriented **Linux** **System Administrator ** to join our team in **Laurel, MD** at Emerson 8. **Responsibilities ... including day-to-day operations, monitoring, and problem resolution for all the clients/servers/ network devices. + Provide support for the patching systems and… more
    ManTech (11/26/25)
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