• Systems Administrator / Linux

    Lockheed Martin (Littleton, CO)
    …location for this position is Littleton, CO\. The Multi\-Function Information Systems Analyst assists users with resolving technical issues with applications, ... connectivity and other IT related issues\. The Multi\-Function Information Systems Analyst will assist with Information Assurance, performing environmental… more
    Lockheed Martin (12/04/25)
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  • Sr Principal Linux Systems

    Northrop Grumman (Boulder, CO)
    …will include but not be limited to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time **Description**...be a condition of continued employment + Must have Linux Operating Systems support experience + … more
    Northrop Grumman (01/07/26)
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  • Secret Linux System…

    Insight Global (Colorado Springs, CO)
    …in the Colorado Springs, CO areas is looking for a qualified Linux System Administrator with a Top Secret clearance to join their team supporting a DoD ... program. The System Administrator will work to maintain multi-user computer systems...& IT infrastructure. Candidate will sustain operational Red Hat Linux systems and provide daily support for… more
    Insight Global (01/07/26)
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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 **Intelligence Sector,** **Cyber & ... difference in National** **Security!** Join our team as a ** Linux Systems Administrator ** , where...+ **Security Clearance** : Must have an active Top Secret /SCI with Polygraph cssrc conmd At Leidos, we don't… more
    Leidos (01/06/26)
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  • Senior Linux System Administrator

    GovCIO (Denver, CO)
    **Overview** GovCIO is currently hiring for an experienced Linux System Administrator with an active Secret clearance to join an Operations team. This ... role, you will work with other members to mitigate vulnerabilities on Linux -based systems , implement STIGs, address POAMs, and mitigate Zero-Day vulnerabilities.… more
    GovCIO (11/07/25)
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  • Help Desk System Administrator - Top…

    Lockheed Martin (Schriever AFB, CO)
    …by troubleshooting and remedying a wide variety of technical issues on both Linux and Windows systems \. Typical duties include configuring and managing ... seeking a detail\-oriented and highly motivated Help Desk System Administrator to join our team in Colorado Springs\. This...Linux and Windows Operating systems to include implementing operating system enhancements to improve… more
    Lockheed Martin (12/11/25)
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  • Systems Administrator - Helpdesk Sys…

    Northrop Grumman (Colorado Springs, CO)
    …Space Systems -Missile Defense Integration offers an excellent opportunity for a ** Systems Administrator - Helpdesk Systems Administrator (25-571)** ... by troubleshooting and resolving a wide range of technical issues on both ** Linux ** and **Windows** systems . **Essential Functions:** + Configuring and managing… more
    Northrop Grumman (01/10/26)
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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, ... be limited to, the following:** + Perform as a Linux and Windows System Administrator on large...+ Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and… more
    Northrop Grumman (10/22/25)
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  • WTRS - Network Administrator

    General Dynamics Information Technology (Fort Carson, CO)
    …of related experience **US Citizenship Required:** Yes **Job Description:** **Network Systems Administrator ** GDIT is seeking qualified candidates for ... ATMP. Seize your opportunity to make a personal impact as a Network Systems Administrator . Here, you'll tailor cutting-edge solutions to the unique requirements… more
    General Dynamics Information Technology (11/25/25)
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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 ... US Air Force Space Command (AFSPC) missions. Clearance: Top Secret Security Clearance with SCI Eligibility Travel Required: Yes...and/or at least five (5) years of Windows and Linux systems administration experience. + Strong knowledge… more
    Paragon Cyber Solutions (01/09/26)
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  • Tier 2 Systems Administrator

    DCCA (Boulder, CO)
    …and benefits package. Visit our website at: www.dcca.com Tier 2 Systems Administrator Must possess a current Secret Clearance For over 40 years, DCCA ... Tier 2 Systems Administrator Location Boulder, CO Job...+ System Deployment and configuration for RHEL7/8 and SuSE Linux + System security management using RMF and associated… more
    DCCA (12/22/25)
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  • Senior System Administrator

    The Boeing Company (Colorado Springs, CO)
    …+ Defines and validates requirements for new and revised hardware and software systems (mixed Windows/ Linux environment on VMware vSphere and OpenStack). + ... & Security** (BDS) Phantom Works Organization is seeking a **Senior System Administrator ** to support the **Phantom Works Space Battle Management Command and Control… more
    The Boeing Company (01/09/26)
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  • Associate System Administrator

    Lockheed Martin (Littleton, CO)
    …rapid paced, team environment * CompTIA Linux \+ or Red Hat Certified Systems Administrator Certification * Ability to provide in\-depth monitoring, able to ... threats\. What You Will Be Doing As a **System Administrator ** within this dynamic environment, you will be the...Day to day Operations - Monitor, maintain, and support Windows/ Linux servers, virtualization platforms, and storage systems more
    Lockheed Martin (12/18/25)
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  • System Administrator

    KBR (Colorado Springs, CO)
    …critical role - protecting our national security. KBR, is seeking a highly motivated Systems Administrator to join us in supporting our great nation, supporting ... STIGs and SRGs + Excellent oral and written communication skills Desired: + Linux System Administrator + DevSecOps + Risk Management Framework implementation +… more
    KBR (11/20/25)
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  • Information Systems Analyst, Stf / Windows…

    Lockheed Martin (Littleton, CO)
    …Windows environments, including Active Directory and Group Policy * Experience with Windows/ Linux administration or NetApp storage systems * Experience applying ... Enterprise Business & Digital Transformation \(EBDT\) organization** Windows System Administrator Windows System Administrator Job Requirements Lockheed Martin… more
    Lockheed Martin (12/04/25)
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  • TSSCI Systems Administrator (Level…

    Insight Global (Louisville, CO)
    Job Description An aerospace company in Louisville, CO, is looking for a Top Secret Systems Administrator (Level 2) to join their growing classified IT team. ... responsible for provisioning, installation and configuration, and maintenance of systems hardware and software. Their environment is a mix...software. Their environment is a mix of Windows and Linux , and you will also be supporting Vmware, Horizon… more
    Insight Global (11/22/25)
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  • System Administrator (SA) SME

    KBR (Colorado Springs, CO)
    Title: System Administrator (SA) SME KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the ... contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future...future of space defense. KBR is seeking a System Administrator to join our team in Colorado Springs, CO.… more
    KBR (12/12/25)
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  • Network/System Administrator (Net/Sys…

    General Dynamics Information Technology (Colorado Springs, CO)
    …Hyper-V/VMWare/ESx/Xen Hypervisors, Enterprise networking/firewalls/intrusion detection/prevention systems , forensic analysis/vulnerability assessment, Group Policy ... of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job Family:** IT… more
    General Dynamics Information Technology (11/04/25)
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  • Senior Specialist, Cyber Infrastructure…

    L3Harris (Broomfield, CO)
    …IT environment. Essential Functions: + Configure, monitor, maintain, and troubleshoot Red Hat Linux systems (both physical and virtual). + Deploy and maintain ... are seeking a skilled and experienced Sr. Specialist, System Administrator to join our Denver, CO team. The ideal...into ground-up builds and ongoing security administration. + Integrate Linux and Windows systems within a unified… more
    L3Harris (12/26/25)
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  • Senior / Principal Windows System…

    SciTec (Boulder, CO)
    …has an immediate opportunity for a talented Senior / Principal Windows System Administrator to join our team in Boulder, CO. Successful applicants will bring deep ... clear focus on supporting customer needs. Responsibilities + Provide Windows systems administration in multiple heterogeneous Microsoft Windows and Red Hat… more
    SciTec (11/19/25)
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