• Systems Administrator ( Linux )

    RTX Corporation (Mckinney, TX)
    …solutions for the global aerospace and defense industry. We are currently seeking a Linux Systems Administrator that will be working onsite in a highly ... requirements within 6 months of start date. **Qualifications We Prefer:** + An active DoD Top Secret clearance + Scanning using tools such as Nessus and SCAP +… more
    RTX Corporation (12/02/25)
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  • Linux /Windows Systems Administrator…

    Lockheed Martin (King Of Prussia, PA)
    …topographies, Virtualization Technologies * Must currently have an active Top Secret Clearance **Desired Skills:** * Windows and Linux OS patching/security ... system administration , including installing, patching, troubleshooting and hardening Linux and Windows operating systems \(both bare\-metal and virtual… more
    Lockheed Martin (12/11/25)
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  • Senior Systems Administrator (Unix/…

    EPS Corporation (Dahlgren, VA)
    …environment. The ideal candidate will bring deep expertise in Unix/ Linux administration , network security, and performance optimization, ensuring ... Senior Systems Administrator (Unix/ Linux ) - (758) Share...and detection toolsto ensure proactive defense. Required Qualifications ACTIVE TOP SECRET + Six (6) yearsof professional… more
    EPS Corporation (11/13/25)
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  • Principal Systems Engineer ( Linux )

    Themis Insight (Fort Meade, MD)
    …and Private, Civilian and Military expertise to every case. We are hiring a Principal Systems Engineer ( Linux ) to work in Fort Meade, MD. Position location is ... to change based on central MD client's needs. Required: TS /SCI with a Polygraph Analyzes user's requirements, concept of...Proficient with Linux . Minimum of 2 years Linux system administration experience. + Experience with… more
    Themis Insight (12/19/25)
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  • Sr. Systems Administrator ( Linux )

    Themis Insight (Fort Meade, MD)
    …and Private, Civilian and Military expertise to every case. We are hiring a Sr. Systems Administrator ( Linux ) to work in Fort Meade, MD. Position location is ... to change based on central MD client's needs. Required: TS /SCI with a Polygraph Provides support for implementation, troubleshooting...Proficient with Linux . Minimum of 3 years Linux system administration experience (within the last… more
    Themis Insight (12/19/25)
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  • Linux Systems Administrator…

    Lockheed Martin (Huntsville, AL)
    … Clearance to start, with the ability and willingness to obtain and maintain DOD Top Secret clearance, with the ability to maintain that clearance throughout the ... and renewals\) * Ability to lift 30 lbs\. **Desired Skills:** * Systems Administration experience supporting United States Government classified environments *… more
    Lockheed Martin (11/20/25)
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  • Principal Linux Administrator ( Top

    RTX Corporation (Richardson, TX)
    …US citizens are eligible for a security clearance​ **Security Clearance:** DoD Clearance: Top Secret Job Description RTX Corporation is an Aerospace and Defense ... McKinney, TX or Tucson, AZ. It requires an active Top Secret clearance in order to be...+ Perform software upgrades, patching, and system maintenance on Linux systems . + Troubleshoot issues and apply… more
    RTX Corporation (12/12/25)
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  • Linux Engineer - TS /SCI…

    General Dynamics Information Technology (Chantilly, VA)
    …RQ212939 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... Family:** IT Infrastructure and Operations **Skills:** Linux Environments,Red Hat Ansible,System Administration **Experience:** 2 + years of related experience… more
    General Dynamics Information Technology (01/14/26)
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  • Principal Linux Systems

    RTX Corporation (Aurora, CO)
    …of VMware (ESXi and vCenter). **Qualifications We Prefer:** + Deployment and administration of systems in Amazon Web Services (AWS)/Commercial Cloud Services ... as only US citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with CI Poly - Current At Raytheon, the foundation of everything we… more
    RTX Corporation (12/29/25)
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  • Linux Administrator

    CACI International (Chantilly, VA)
    …IT Operations team. The successful candidate will manage and support enterprise Linux systems that are mission-critical to national security operations. This ... with RMF (Risk Management Framework). Required Qualifications * Active Top Secret clearance (SCI eligibility strongly preferred)....of Identity and Access Management (IAM) and integration with Linux systems . * Red Hat Certified System… more
    CACI International (11/13/25)
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