• Principal Linux Systems

    Northrop Grumman (Aurora, CO)
    …We Want You!** The Northrop Grumman Classified Solutions team is seeking an experienced ** Linux Systems Administrator ** to join its dynamic team of technical ... be limited to the following: + Perform as primary Linux Systems Administrator for a...system environments + Candidates must have a current DOD ** Top ** ** Secret /SCI** levelsecurity clearance, to include a… more
    Northrop Grumman (11/11/25)
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  • Senior Linux Systems

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a **Senior Linux Systems Administrator ** in our **National Security Sector's (NSS) Cyber & ... difference in National** **Security!** Join our team as a ** Linux Systems Administrator ** , where...Virtualization + **Security Clearance** : Must have an active Top Secret /SCI with Polygraph cssrc conmd Come… more
    Leidos (10/09/25)
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  • Top Secret Systems

    Insight Global (Louisville, CO)
    Job Description An aerospace company in Louisville, CO, is looking for a Top Secret Systems Administrator (Level 3) to join their growing classified IT ... responsible for provisioning, installation and configuration, and maintenance of systems hardware and software. Their environment is a mix...Active Directory, and VDI. You must have an active Top Secret clearance with SCI eligibility and… more
    Insight Global (11/10/25)
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  • Identity and Access Management System…

    Lockheed Martin (Schriever AFB, CO)
    …PowerShell\. **Please Note:** * This position requires a government security clearance at the Top Secret level; you must be a US Citizen for consideration\. * ... a diverse team of technical professionals including software and systems engineers, architects, and our project engineering team\. \-As...of work\. **Basic Qualifications:** * Must possess an active Top Secret clearance with SCI eligibility *… more
    Lockheed Martin (09/20/25)
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  • Linux System Administrator

    ManTech (Aurora, CO)
    **MANTECH** is seeking a ** Linux ** **System Administrator ** to join our team in **Southlands, Colorado** . This position supports the ELINT Modernization effort ... issues at Tier 1 and Tier 2 support levels + Configure and manage UNIX/ Linux operating systems and install/load OS software + Optimize system operations and… more
    ManTech (10/23/25)
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  • Linux System Administrator

    ManTech (Aurora, CO)
    **MANTECH** seeks a motivated and customer-focused ** Linux ** **System Administrator ** to join our team in **Southlands, Colorado** . This position supports the ... issues at Tier 1 and Tier 2 support levels + Configure and manage UNIX/ Linux operating systems and install/load OS software + Optimize system operations and… more
    ManTech (10/23/25)
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  • Systems Administrator

    ISYS Technologies (Schriever AFB, CO)
    Minimum Clearance Required Top Secret Responsibilities I2X Technologies is a reputable technology services company to the Federal Government. Whether the focus ... of our government customers. I2X Technologies is seeking a Systems Administrator to support ongoing activities for...position will be on-site and will require an active Top Secret clearance with SCI / SAP… more
    ISYS Technologies (09/30/25)
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  • Systems Administrator Staff, Level 5…

    Lockheed Martin (Boulder, CO)
    …Position Summary The NGG program seeks a Systems Administrator to support the Operations ... 24/7 operations **Basic Qualifications:** * Proficient with Windows and Linux operating systems * Proficient with RHEL...must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should… more
    Lockheed Martin (11/07/25)
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  • GCCS Systems Administrator

    Paragon Cyber Solutions (Colorado Springs, CO)
    …immediate opening for those ready for an exciting and dynamic career as a Systems Administrator to join other smart, talented, and dedicated engineers that pride ... and US Air Force Space Command (AFSPC) missions. Clearance: Top Secret Security Clearance with SCI Eligibility...and/or at least five (5) years of Windows and Linux systems administration experience. + Strong knowledge… more
    Paragon Cyber Solutions (10/11/25)
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  • Systems Administrator Level 2

    Northrop Grumman (Aurora, CO)
    …to the warfighter. Come be a part of our mission. Northrop Grumman is seeking a ** Systems Administrator ** **Level 2** to join our team at our facility in Aurora, ... with 6 years of IT experience is required + **Candidate must have active/current Top Secret /SCI clearance with adjudicated Full Scope Polygraph at time of… more
    Northrop Grumman (10/22/25)
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