• Systems Administrator / Diads / Sam…

    Lockheed Martin (Nellis Air Force Base, NV)
    …forefront of cutting\-edge technology and engineering\. Lockheed Martin is seeking a Systems Administrator to develop, integrate, and operate DIADS and ... operation of threat surface\-to\-air missiles \(SAMs\) and Integrated Air Defense Systems \(IADS\) in the modeling and simulation environment\. Duties require… more
    Lockheed Martin (11/09/25)
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  • Specialist, Systems Administration…

    L3Harris (Melbourne, FL)
    …professional to join the Managed Operational Support Services (OSS) team as a Linux System Administrator (Sys Admin). Responsibilities for this position include ... in the interest of national security. Job Title: Specialist, Systems Administration Job Code: 32348 Job Location: Melbourne, FL...the virtual environment (VM) and installing and configuring the Linux based Red Hat Operating System. The Sys Admin… more
    L3Harris (12/21/25)
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  • Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include ... center equipment and other IT assets. + Performing general operations & maintenance for COTS/GOTS hardware and software. **Minimum...one within 180 days. + Experience with Windows and Linux operating systems . + Experience providing help-desk… more
    ManTech (12/03/25)
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  • Systems Administrator

    Lockheed Martin (Herndon, VA)
    …an interval agreed upon with the Sponsor * Perform system hardening of Linux systems according to information security engineering principles and industry best ... using test driven development\. * Demonstrated experience in the deployment, provisioning, operations and maintenance of Linux environments running centos and… more
    Lockheed Martin (01/11/26)
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  • Systems Administrator Expert

    General Dynamics Information Technology (Annapolis Junction, MD)
    …**Public Trust/Other Required:** None **Job Family:** IT Infrastructure and Operations **Skills:** Linux ,ServiceNow Platform,Unix **Experience:** 15 + years ... to these systems . Provides support to IT systems including day-to-day operations , monitoring and problem...involved in the resolution process. Configures and manages UNIX, Linux and Windows operating systems and installs/loads… more
    General Dynamics Information Technology (11/08/25)
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  • IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include but ... one within 180 days. + System Experience: Experience with both Windows and Linux operating systems . + End-User Support: Experience providing help-desk support… more
    ManTech (11/19/25)
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  • Senior System Cloud Administrator

    Insight Global (Herndon, VA)
    … with strong experience in Microsoft Azure, Windows Server administration, and Linux systems within hybrid cloud environments. The ideal candidate excels ... Linux environments * Provide hands on support and diagnosis for Linux systems , including troubleshooting OS issues, performance problems, service failures,… more
    Insight Global (12/04/25)
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  • Unix Administrator

    SAIC (Washington, DC)
    …using Cohesity and Veritas. Key Responsibilities: + Manage, configure, and maintain UNIX/ Linux systems (RHEL, CentOS, Ubuntu, AIX, or Solaris depending on ... **Description** **SAIC** is seeking a **UNIX Administrator ** with hands-on experience in Cohesity backup and recovery solutions to join our team. The ideal candidate… more
    SAIC (12/12/25)
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  • System Administrator ( Associate)

    Nexagen Networks Inc (Picatinny Arsenal, NJ)
    …server operations , workstation management, and user support while ensuring systems remain secure, reliable, and compliant with established best practices. This ... System Administrator - Associate Security Clearance Requirement: Current and Active DoD Secret Salary Range: $65K - $95K (The salary range provided is a general… more
    Nexagen Networks Inc (01/10/26)
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  • Senior Windchill Application Administrator

    RTX Corporation (Tucson, AZ)
    …Degree in a related field and minimum 5 years experience + Experience with Linux /Unix commands, operations , and administration + Must be able to obtain ... tools, or methodologies: **PTC Windchill** , Oracle database, Apache web server, ** Linux ** & Windows server operating systems , Development (using Java, Python,… more
    RTX Corporation (11/18/25)
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