• NIPRNet / SIPRNet Administrator

    Applied Research Associates, Inc. (Eglin AFB, FL)
    …Applied Research Associates, Inc. ( **ARA** ) is seeking a lead administrator for a SIPRNet capability supporting a DoD‑owned secret‑level enclave that already ... secure SIPRNet operations. This role works directly with the Sr. Systems Administrator and the broader systems‑admin team leading engineering and sustainment efforts… more
    Applied Research Associates, Inc. (11/21/25)
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  • Lead Senior Systems Administrator

    ManTech (Chantilly, VA)
    …but not limited to:** + Lead and supervise a team of system administrators ( Windows / Linux /VMWare) and IT support staff. + Design, implement, and maintain VMware ... **MANTECH** seeks a motivated, mission-oriented **Senior Systems Administrator ** to join our team in **Chantilly, VA.**...understanding of client and server operations and maintenance with Windows 10 and 11 environments and Windows … more
    ManTech (12/19/25)
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  • Network/System Administrator (Net/Sys…

    General Dynamics Information Technology (Colorado Springs, CO)
    …competency in one or more of the following supported platforms: Microsoft Windows Server, Red Hat Enterprise Linux servers, MS Hyper-V/VMWare/ESx/Xen ... **Job Family:** IT Infrastructure and Operations **Skills:** Computer Networking,Microsoft Windows Server,Network Systems,Troubleshooting **Experience:** 1 + years of related… more
    General Dynamics Information Technology (11/04/25)
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  • Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …You Will Do:** + Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. + Responsible for provisioning, ... operation, and maintenance of systems hardware and software related to a Linux / Windows infrastructure for classified programs. Duties include, but are not… more
    RTX Corporation (12/29/25)
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  • Senior Software Support Administrator II

    Antech Diagnostics (Fountain Valley, CA)
    …migrations, or service disruptions. + Troubleshoot software issues across platforms ( Windows , Linux , cloud-based and on-prem applications) and assist in ... cycles preferred. **Knowledge, Skills and Abilities** + Strong troubleshooting across Windows / Linux and cloud-based platforms and proficiency in SQL/database… more
    Antech Diagnostics (01/01/26)
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  • Systems Administrator II

    COMSO, Inc (Anchorage, AK)
    …and remains involved in the resolution process. + Configures and manages UNIX, Linux and Windows operating systems and installs/loads operating system software, ... Systems Administrator II Anchorage, AK (http://maps.google.com/maps?q=Anchorage+AK+USA+99505) Description COMSO, Inc....in the resolution process + Configure and manage UNIX, Linux and Windows (or other applicable) operating… more
    COMSO, Inc (01/01/26)
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  • Systems Administrator

    ManTech (Bremerton, WA)
    …updates, and enhancements + Provide IT systems support for a wide range of Windows & Linux based technologies, including Microsoft Server 2016/2019/2022, Red Hat ... **MANTECH** seeks a motivated, career, and customer-oriented **Systems Administrator ** to join our team at the Puget Sound Naval Shipyard in **Bremerton,… more
    ManTech (12/30/25)
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  • Systems & Network Administrator

    Leidos (Riverside, CA)
    …**VMware, Citrix XenApp, Cisco UCS, ESXi, Microsoft Exchange, Red Hat Linux , and Windows servers/workstations** + Perform installation, configuration, and ... **Description** ** Position Overview** Leidos is seeking a **Network & Computer Systems Administrator ** to join our team at March Air Reserve Base, CA. In this… more
    Leidos (12/24/25)
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  • Sr Systems Administrator

    Robert Half Technology (Jacksonville, FL)
    …as a Systems Administrator or equivalent role + Hands-on experience with Windows Server, Linux , virtualization, and enterprise storage + Strong knowledge of ... Description We are seeking an experienced Senior Systems Administrator to manage, maintain, and optimize our enterprise...IT operations. Key Responsibilities + Install, configure, and maintain Windows Server and Linux systems + Administer… more
    Robert Half Technology (12/20/25)
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  • Cohesity NetBackup Administrator

    GovCIO (Kearneysville, WV)
    …and patching Veritas NetBackup primary/master, media, and client servers across Linux and Windows platforms. + Designing, implementing, and maintaining ... architecture (master/media servers, clients, MSDP, SLP, AIR). + Proficiency with Linux (RHEL/SUSE) and Windows Server administration. + Practical experience… more
    GovCIO (12/13/25)
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