• Help Desk System Administrator - Top Secret

    Lockheed Martin (Schriever AFB, CO)
    …Algorithm Development, User Interface Development, Automated Testing, Cyber Security and enhancing other critical, leading\-edge missile defense technologies\. ... Doing** We are seeking a detail\-oriented and highly motivated Help Desk System Administrator to join our team in Colorado Springs\. This role focuses on providing… more
    Lockheed Martin (12/11/25)
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  • Senior Linux Administrator Team Lead

    General Dynamics Information Technology (Falls Church, VA)
    …Secret **Public Trust/Other Required:** None **Job Family:** IT Infrastructure and Operations **Skills:** Critical Systems,Enterprise Systems,Software Updates,System ... Engineer (RHCE) | Red Hat - Red Hat, CompTIA Security + CE | CompTIA - CompTIA **Experience:** 5 +...Citizenship Required:** Yes **Job Description:** **HOW A LINUX SYSTEM ADMINISTRATOR WILL MAKE AN IMPACT:** + Provide system administration… more
    General Dynamics Information Technology (10/25/25)
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  • Systems Administrator / Information Systems…

    Guidehouse (Arlington, VA)
    …Active Secret **What You Will Do** **:** We are seeking a Systems Administrator / Information Systems Engineer in support of the Marine Corps. Responsibilities ... + An ACTIVE and MAINTAINED "SECRET" Federal or DoD security clearance. + Highschool Diploma/ GED. + THREE (3)...technical issues related to MCFMIS, POS systems, and network infrastructure in a timely manner, particularly under tight deadlines.… more
    Guidehouse (01/08/26)
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  • Junior Network Administrator

    Axxum Technologies (Chicago, IL)
    Junior Network Administrator Location: Chicago, IL + Monitor and assist in managing network infrastructure (firewalls, routers, switches, wireless access points) ... with some network + Assist in implementing and maintaining network and security policies, procedures, and configurations + Support incident response efforts by… more
    Axxum Technologies (01/05/26)
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  • Network Administrator

    SAIC (Washington, DC)
    …technical and administrative support to facilitate operations of critical MARS infrastructure and services. This effort focuses on providing a comprehensive set ... with an anticipated decision expected by Winter/ Spring 2026.** The **Network Administrator ** responsibilities include, but are not limited to: + Manages the design,… more
    SAIC (01/03/26)
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  • System Administrator 4

    M. C. Dean (Annapolis Junction, MD)
    …in electrical, engineering, and cybersecurity industries. We are seeking a **System Administrator 4** to join our ** Security and Electronic Systems (SES)** ... for the nation's most mission-critical facilities, secure environments, complex infrastructure , and global enterprises. With over 7,000 employees, our capabilities… more
    M. C. Dean (12/30/25)
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  • NCIS Cyber Systems Administrator - SecOps…

    General Dynamics Information Technology (Quantico, VA)
    …Obtain:** Top Secret/SCI **Public Trust/Other Required:** None **Job Family:** IT Infrastructure and Operations **Skills:** DISA STIG,IT Security Operations, ... Security Content Automation Protocol (SCAP),System Administration **Certifications:** Security + CE - CompTIA - CompTIA **Experience:** 5 + years of related… more
    General Dynamics Information Technology (12/08/25)
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  • Windows Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a skilled and motivated **Windows Systems Administrator ** to join our team of top Information Technology and Analytic professionals in **Chantilly, ... in maintaining and enhancing the Sponsor's Windows environment, contributing to national security through technical excellence. This dynamic role is embedded in an… more
    ManTech (12/03/25)
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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 ... general system administration support, to include system maintenance/upgrades, OS/software security patching, AV compliance patching, software and hardware transitions,… more
    FGS, LLC (11/22/25)
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  • System Administrator 1

    M. C. Dean (San Jose, CA)
    …for the nation's most mission-critical facilities, secure environments, complex infrastructure , and global enterprises. With over 7,000 employees, our capabilities ... span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, MC… more
    M. C. Dean (11/15/25)
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