• Senior Systems Administrator

    Leidos (Chantilly, VA)
    …that provides attribute data via an LDAP interface to hundreds of various Sponsor systems Required Qualifications + Active TS /SCI with Polygraph + BS degree and ... **Description** Leidos is seeking a System Administrator for a technical development program supporting the...+ Must be an expert in using Linux-based operating systems + Must have strong Bash skills + Must… more
    Leidos (10/10/25)
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  • Senior Systems Administrator (Linux)

    Amentum (Waimea, HI)
    …following OS Certifications required + Linux + Linux+ Red Hat Certified System Administrator (RHCSA) **Security Clearance** Top Secret security clearance is ... Amentum is seeking a highly experienced Senior Linux System Administrator to oversee and manage enterprise-level Linux infrastructure in support of US Navy… more
    Amentum (09/24/25)
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  • Classified Area Systems

    Leidos (Huntsville, AL)
    …for Windows and Linux systems . + **Must have an active DoD Secret clearance and ability to obtain Top - Secret clearance.** **Preferred Qualifications:** ... Modernization CIS Team is looking for a skilled **System Administrator ** to join our team. In this role, you'll...+ Provide backup and recovery services while managing file systems and disk space. + Utilize desktop and server… more
    Leidos (10/16/25)
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  • Systems Administrator 3 - 23829 (FS…

    Huntington Ingalls Industries (Fort Meade, MD)
    …Full Time/Salaried/Exempt Anticipated Salary Range: $87,990.00 - $144,500.00 Security Clearance: TS /SCI with Poly Level of Experience: Mid This opportunity resides ... with Warfare Systems (WS), a business group within HII's Mission Technologies...with network administrators. + Duties may include setting up administrator and service accounts, maintaining system documentation, tuning system… more
    Huntington Ingalls Industries (10/07/25)
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  • Systems Administrator 4

    Huntington Ingalls Industries (Bremerton, WA)
    …Time/Salaried/Exempt Anticipated Salary Range: $87,194.00 - $124,562.00 Security Clearance: TS /SCI Level of Experience: Mid This opportunity resides with Warfare ... Systems (WS), a business group within HII's Mission Technologies...and the sensitivity of the operational environment, an active TS /SCI security clearance will be required. Essential Job Responsibilities… more
    Huntington Ingalls Industries (10/13/25)
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  • Sr. Linux/Unix Administrator

    S4 Inc. (Omaha, NE)
    …Commensurate with experience Job Listing Number: NE25002 LCAT: Senior Network and Computer Systems Administrator Overview: S4 Inc. has a Sr. Linux/Unix System ... users and other technical teams from a service support perspective. Required Qualifications: + Top Secret security clearance and eligible for SCI access + Cloud+… more
    S4 Inc. (10/08/25)
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  • Systems Administrator

    SAIC (Washington, DC)
    **Description** SAIC, a leading provider of systems engineering & integration, systems development & deployment, intelligence analysis and targeting, and ... an anticipated decision expected by fall 2025.** The System Administrator responsibilities include, but are not limited to: +...and maintain the infrastructure that powers networks and operating systems such as UNIX, Linux, and Windows. + Install… more
    SAIC (09/06/25)
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  • Principal Linux Systems

    RTX Corporation (El Segundo, CA)
    …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 ... problems that create a safer, more secure world. **Principal System Administrator ** in infrastructure Workplace Services, collaborates with many teams to support… more
    RTX Corporation (09/09/25)
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  • Senior Systems Administrator

    Competitive Range Solutions, LLC (Fort Meade, MD)
    …a culture of continuous learning and improvement. Required Qualifications: + Active Secret Clearance: TS preferred. + Education: + Associate's degree in ... projects in a collaborative, congenial environment. We are seeking a Senior System Administrator to lead the management, operations, and maintenance of complex DoD … more
    Competitive Range Solutions, LLC (11/06/25)
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  • Systems Administrator

    Lockheed Martin (Littleton, CO)
    …will be performing System Administration tasks on the Linux Redhat operating systems \. **This is an EARLY\-MID CAREER \(level 3\) ROLE where candidates typically ... years** of professional experience and a BS degree or above\. **An active TS /SCI clearance is required for consideration\.** Lockheed Martin employees play an active… more
    Lockheed Martin (11/05/25)
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