• Systems Administrator - Senior

    CACI International (O'Fallon, IL)
    …investigation upon hire + Expert knowledge of various operating systems (eg, Windows Server , Linux , Unix) + Advanced expertise in network protocols, services, ... considered in lieu of degree) + 8-11 years of extensive experience in system administration + Secret security clearance, or US citizen with ability to pass T-1… more
    CACI International (11/08/25)
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  • Test Engineer SME

    Leidos (Bethesda, MD)
    …**Preferred Qualifications** + Experience with administration of MS Windows Server or Linux environments (Lab or Personal development space) + ... Experience reviewing output of CI jobs and capable of tracking test failures back to code changes that resulted in bugs + Capable of review code check-ins to understand the impact of code changes on system functionality and potential applications bugs. +… more
    Leidos (11/07/25)
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  • Principal Test Engineer

    Leidos (Bethesda, MD)
    …Polygraph** **Preferred Qualifications:** + Experience with administration of MS Windows Server or Linux environments (Lab or Personal development space) + ... Experience reviewing output of CI jobs and capable of tracking test failures back to code changes that resulted in bugs + Capable of review code check-ins to understand the impact of code changes on system functionality and potential applications bugs + Direct… more
    Leidos (10/31/25)
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  • Senior Linux System Administrator

    Black Bear Technology Solutions, LLC (Adelphi, MD)
    … Linux System Administrator is responsible for leading system administration activities. This position oversees the installation, configuration, maintenance, and ... Senior Linux System Administrator Clearance Required: Top Secret or...improve performance and reliability. Key Responsibilities: + Lead system administration activities across ARLEN and CARLEN networks. + Assign… more
    Black Bear Technology Solutions, LLC (11/21/25)
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  • Help Desk System Administrator - Top Secret

    Lockheed Martin (Schriever AFB, CO)
    …of starting\. * Experience with system administration in both Windows Server and Linux operating systems\. * Experience with troubleshooting and resolving ... by troubleshooting and remedying a wide variety of technical issues on both Linux and Windows systems\. Typical duties include configuring and managing Linux … more
    Lockheed Martin (12/11/25)
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  • Hybrid Identity Developer

    RTX Corporation (Hartford, CT)
    …moderate to high scope and complexity + Provide Tier 3 (Advanced Support) Linux systems administration support **Qualifications You Must Have:** + Typically ... Windows OS, VMWare Suite, RadiantLogic VDS, ESX virtual computing methods, Redhat Linux OS, Redhat Directory Server , Kubernetes Clustering, Prometheus and… more
    RTX Corporation (11/26/25)
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  • Senior Systems Administrator - Windows/…

    Mount Sinai Health System (New York, NY)
    …Sinai. The Administrator is the principal technology expert for Windows and Linux systems, and help support high-performance computing (HPC) environment in the ... of applications, including VMware, REDCap, Jira, Confluence, Postgres, MySQL, SQL server , Tivoli Storage Manager (TSM), and other custom Sinai-developed software. In… more
    Mount Sinai Health System (12/22/25)
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  • Sr. Systems Administrator ( Linux )

    Themis Insight (Fort Meade, MD)
    …for a bachelor's degree. + Proficient with Linux . Minimum of 3 years Linux system administration experience (within the last 3 years). + Knowledge of ... and Military expertise to every case. We are hiring a Sr. Systems Administrator ( Linux ) to work in Fort Meade, MD. Position location is subject to change based… more
    Themis Insight (12/19/25)
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  • Senior System Cloud Administrator

    Insight Global (Herndon, VA)
    …skilled Senior Systems Cloud Administrator with strong experience in Microsoft Azure, Windows Server administration , and Linux systems within hybrid cloud ... systems across both on prem and Azure environments. Key Responsibilities Azure Administration * Manage Azure services such as virtual machines (Windows & … more
    Insight Global (12/04/25)
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  • TSSCI Network / Systems Admin I

    Insight Global (Duluth, MN)
    …in one or more of the following supported platforms: Microsoft Windows Server , Red Hat Enterprise Linux servers, MS Hyper-V/VMWare/ESx/Xen Hypervisors, ... of Microsoft Windows desktop and server operating systems, Microsoft Exchange Server , and as needed RHEL operating systems administration and associated… more
    Insight Global (01/16/26)
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