• Senior Linux System Administrator

    ManTech (Fort Meade, MD)
    ManTech seeks a ** Senior Linux System Administrator ** to join our team in **Ft. Meade, MD** . In this role, you will provide support for implementation, ... troubleshooting, and maintenance of IT systems , as well as manage IT system infrastructure and...configuration, troubleshooting, and maintenance. **Security Clearance Requirements:** + Active TS /SCI with Polygraph is required to be considered for… more
    ManTech (12/24/25)
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  • Senior System Administrator (2nd…

    RTX Corporation (Springfield, VA)
    …tough, meaningful problems that create a safer, more secure world. Raytheon seeks a Systems Administrator to join a high-performing team at the heart of an ... as only US citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with Poly - Current At Raytheon, the foundation of everything we do… more
    RTX Corporation (01/07/26)
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  • Lead Windows Systems Administrator

    General Dynamics Information Technology (Chantilly, VA)
    …PRX25822 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... of related experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead Windows… more
    General Dynamics Information Technology (12/29/25)
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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 ... a team obtaining and configuring Virtual Machines (VMs), loading Operating systems and software, performing security hardening, patching, and monitoring status.… more
    Synergy ECP (10/15/25)
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  • Sr. Principal Storage & Data Protection System…

    RTX Corporation (Tucson, AZ)
    …required, as only US citizens are eligible for a security clearance​ **Security Clearance:** Top Secret - Current At Raytheon, the foundation of everything we do ... solutions to solve complex DT infrastructure problems. As a ** Senior Principal level System Administrator ,** this role...have a current and maintain a US government issued Top Secret security clearance is required. US… more
    RTX Corporation (12/05/25)
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  • Senior Contract Support…

    KBR (Chantilly, VA)
    Title: Senior Contract Support Administrator Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced ... contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future...and able to work independently with minimal guidance + TS /SCI with Polygraph Ready to Make a Difference? If… more
    KBR (10/15/25)
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  • Property Book Administrator

    Systems Technologies, Inc. (Hanover, MD)
    …)and AESIP (Army Enterprise System Integration Program). SECURITY CLEARANCE . Active DoD Top Secret /SCI clearance required TRAVEL . Some travel may be required. ... On-site Job Category Other Apply Now (https://phh.tbe.taleo.net/phh04/ats/careers/v2/applyRequisition?org=SYSTEK&cws=42&rid=1141) PROPERTY BOOK ADMINISTRATOR The company is seeking mid-level and senior more
    Systems Technologies, Inc. (12/02/25)
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  • Sr Principal Linux Systems

    Northrop Grumman (Boulder, CO)
    …include but not be limited to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate effectively at ... our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today,...with Certification & Accreditation process and STIGs + Active Top Secret is preferred We offer flexible… more
    Northrop Grumman (01/07/26)
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  • Linux Systems Administrator

    Arena Technical Resources, LLC (St. Louis, MO)
    TS /SCI cleared Red Hat Data Center / Systems Administrator in St. Louis, MO to...Experience | + + + | Level 3 - Senior | - PhD + 2 Years Experience | ... Linux Systems Administrator Location: St. Louis, MO,...Linux Systems Administrator Location: St. Louis, MO, US Job ID:...once you have established yourself on the team Active TS /SCI clearance and CI Poly is required (we can… more
    Arena Technical Resources, LLC (01/05/26)
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  • Systems Administrator III

    Integrits Corporation (Edwards AFB, CA)
    …, and aircrews for today's missions and tomorrow's global challenges. A Systems Administrator II evaluates system specifications, configures system, establishes ... permit interaction with other employees as well as taking work direction from Senior Systems Administrators or Supervisors. Requires limited to no supervision.… more
    Integrits Corporation (01/06/26)
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