• Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …Windows and Redhat Enterprise Linux environment. + Understanding and knowledge of Windows Server internals or Linux fundamentals to include DNS, DHCP, ... for a security clearance. + Must have Window and Linux experience + Experience in one of the following:...JSIG, DFARS and/or DoD/RMF + In-depth working experience in Windows Server + Experience with data storage,… more
    RTX Corporation (09/16/25)
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  • System Administrator

    ManTech (Eglin AFB, FL)
    …technical competency in one or more of the following supported platforms: Microsoft Windows Server , Red Hat Enterprise Linux servers, MS ... **MANTECH** seeks a motivated, career and customer-oriented **System Administrator ** to join our Air Force / Space...installation, configuration, and troubleshooting of Microsoft Hyper V, Microsoft Server 2008 R2, Server 2012 R2, … more
    ManTech (11/20/25)
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  • Senior Cloud Linux Engineer

    Robert Half Technology (Tampa, FL)
    …experience in Linux system administration and related fields. * Advanced knowledge of Linux operating systems and Windows Server 2019 or later. * ... Description We are looking for an experienced Linux Cloud Systems Administrator to join our team in Tampa, Florida. In this contract-to-permanent role, you will… more
    Robert Half Technology (10/28/25)
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  • NIPRNet / SIPRNet Administrator

    Applied Research Associates, Inc. (Eglin AFB, FL)
    … Administrator Technical Skills:** + AD‑DS design, deployment, and hardening ( Windows Server 2019/2022/2025) + DNS management (authoritative and conditional ... Associates, Inc. ( **ARA** ) is seeking a lead administrator for a SIPRNet capability supporting a DoD‑owned secret‑level...forwarding) + Linux administration (for supporting services and monitoring) + HAIPE… more
    Applied Research Associates, Inc. (11/21/25)
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  • Systems Administrator

    CACI International (Norfolk, VA)
    …with DoD/Navy systems + Technical certifications (CompTIA A+, Network+) + Knowledge of Windows and Linux systems + Basic scripting abilities + Understanding of ... Systems Administrator Job Category: Service Contract Act Time Type:...operation of business systems + Support mainframe, mini, or client/ server based systems + Optimize system operation and resource… more
    CACI International (09/05/25)
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  • Senior Systems Administrator 10k sign…

    Leidos (Annapolis Junction, MD)
    …+ Providing System Administration and SSP/Security support for the program in both Linux and Windows environments. + Implement, troubleshoot, and maintain IT ... **Leidos** has a new and exciting opportunity for a Senior Systems Administrator in our **National Security Sector's (NSS) Cyber & Analytics Business Area… more
    Leidos (11/15/25)
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  • Junior System Administrator

    GovCIO (Kearneysville, WV)
    …activities. + Assist in the management and maintenance of servers, operating systems ( Windows and Linux ), and enterprise applications within a demanding 24/7 ... **Overview** GovCIO is seeking a **Junior System Administrator ** to join our team, supporting a critical...CE, CySA+) + Basic proficiency in managing and maintaining Windows and Linux servers, operating systems, and… more
    GovCIO (11/13/25)
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  • Journeyman Network and Computer Systems…

    NANA Regional Corporation (South Burlington, VT)
    …TCP/IP, routing/switching, VPNs, and firewall configurations. + Experience managing Microsoft Windows Server environments and Active Directory. + Familiarity ... system infrastructure across multiple sites. + Install, configure, manage, and troubleshoot Windows and Linux -based servers and networking equipment (eg, Cisco,… more
    NANA Regional Corporation (10/17/25)
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  • Systems Administrator II (Active Secret…

    NANA Regional Corporation (Vandenberg AFB, CA)
    …requirements and ensure system security measures are correctly documented + Routinely conducts Linux / Windows server antivirus scans and security audit log ... an active CompTIA Security Plus certification + 3 or more years of Linux / Windows administration experience + Experience interfacing with Military personnel and… more
    NANA Regional Corporation (10/02/25)
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  • System Administrator

    Synergy ECP (Columbia, MD)
    …and remains involved in the resolution process. Configures and manages UNIX, Linux and Windows operating systems and installs/loads operating system software, ... System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Founded in 2007...in the resolution process + Configure and manage UNIX, Linux and Windows (or other applicable) operating… more
    Synergy ECP (10/22/25)
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