• COLSA Corporation (Huntsville, AL)
    Join our team as a Linux Systems Administrator , where you will support and manage a diverse mix of workstations, servers, and high-performance computing ... clusters using Bright, Slurm, and/or xCAT. + Strong networking experience in Linux environments. + Cross-OS administration experience with Windows . +… more
    DirectEmployers Association (10/02/25)
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  • Neya Systems (Warrendale, PA)
    …of relevant experience, with at least five (5) years of experience in a senior Linux Systems Administrator role, preferably in a high-tech or regulated ... join our team. This successful person will manage our Linux -based infrastructure and our Windows -11 developer fleet...least five (5) years of experience in a senior Linux Systems Administrator role Equal… more
    DirectEmployers Association (10/23/25)
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  • Infinity Systems Engineering (Colorado Springs, CO)
    …WE ARE MORE - now, come be more with us! Job Summary: The Systems Administrator is responsible for the maintenance, configuration, and reliable operation of ... security, and providing technical support to internal users. The Systems Administrator will work closely with the...setup. + Experience or familiarity with Red Hat Enterprise Linux integration with Windows authentication services (Active… more
    DirectEmployers Association (12/05/25)
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  • Tyto Athene (Santa Barbara, CA)
    …+ 3or more years of hands-on Systems Administration experience including Windows based computers, network, system, server administration; Linux system and ... **Description** Tyto Athene is searching for a ** Systems Administrator /Information System Security Officer** to join our CA team. **Responsibilities:** + Provide… more
    DirectEmployers Association (12/06/25)
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  • Schrdinger (NY)
    We're seeking a ** Systems Administrator ** to join us in our mission to improve human health and quality of life! At Schrodinger, we're dedicated to advancing ... + Administer and maintain a diverse fleet of endpoints and servers (macOS, Windows , and Linux ), including provisioning, patching, and configuration management +… more
    DirectEmployers Association (12/03/25)
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  • Argonne National Laboratory (Lemont, IL)
    Argonne has an opportunity to serve as the System Administrator of the classified National Security Systems (NSS) for the Security Programs Facility (SPF). ... software upgrades. + Experience with the administration of common Windows Server Domain Services such as Active Directory, DNS,...Veeam, or similar enterprise backup solutions. + Familiarity with Linux Server Operating Systems such as RHEL,… more
    DirectEmployers Association (11/22/25)
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  • Applied Research Associates, Inc. (Eglin AFB, FL)
    …required for secure SIPRNet operations. This role works directly with the Sr. Systems Administrator and the broader systems -admin team leading engineering ... Applied Research Associates, Inc. ( **ARA** ) is seeking a lead administrator for a SIPRNet capability supporting a DoD-owned secret-level enclave that already… more
    DirectEmployers Association (11/21/25)
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  • PSEG Long Island (Bethpage, NY)
    …and overall health of a variety of cyber security tools within a Microsoft Windows , Linux and UNIX server environments. This role will manage and support ... application development techniques. + Working knowledge and experience in supporting Microsoft Windows Server Operating Systems , Directory Services (AD), MS PKI… more
    DirectEmployers Association (11/06/25)
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  • Tyto Athene (Ashburn, VA)
    …as an applications or systems administrator . + Practical knowledge of Windows and Linux systems administration. + Experience with Linux ... . + Administer and optimize enterprise IT applications and systems in Windows and Linux ...Web Services (AWS). + Serve as a senior Splunk Administrator or Architect, responsible for the configuration, maintenance, and… more
    DirectEmployers Association (11/01/25)
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  • Infinity Systems Engineering (Alexandria, VA)
    …+ Configure, manage, secure, and troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux platforms (updates, security, ... with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven...configuration (Cisco experience is a plus) + Proficient in Linux and Windows system administration + Active… more
    DirectEmployers Association (11/25/25)
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  • Senior Systems Administrator

    ManTech (Fairmont, WV)
    **MANTECH** seeks a motivated and customer-oriented **Senior Systems Administrator - Windows / Linux Dual-Stack Specialist** to join our team in **Boulder, ... experience in Systems Administration, with demonstrated expertise in both Windows Server and Enterprise Linux environments. + Expert-level, hands-on… more
    ManTech (11/05/25)
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  • Linux / Windows Systems

    COMSO, Inc (Columbia, MD)
    Linux / Windows Systems Administrator II (TS/SCI w/ Polygraph) Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Job Type Full-time ... CWIP: IAT Level II Certification, IA Baseline Certification in Linux , Unix, Windows , or Cisco OS operating...established Standard Operating Procedures (SOPs). + Build and configure Windows Server 2019 and 2022 systems from… more
    COMSO, Inc (11/27/25)
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  • Senior Systems Administrator

    Mount Sinai Health System (New York, NY)
    …at Mount Sinai. The Administrator is the principal technology expert for Windows and Linux systems , and help support high-performance computing (HPC) ... team and a research data services team. The **_Senior Systems Administrator /Engineer,_** as a member of the...6 years of experience in designing, administering and troubleshooting Linux and Windows systems , storage… more
    Mount Sinai Health System (09/22/25)
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  • Associate Linux and Windows

    The Boeing Company (Tukwila, WA)
    …States (US) Infrastructure Organization is currently seeking an **Associate Linux and Windows Systems Administrator ** to join the team in **Tukwila, WA** ... years + 1+ years of experience in performing system administration tasks on Windows and Linux hosts including installing security patches and making… more
    The Boeing Company (12/19/25)
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  • Linux / Windows Systems

    Lockheed Martin (King Of Prussia, PA)
    …6 months of start\) * CompTIA Linux \+ or Red Hat Certified Systems Administrator Certification * Ability to provide in\-depth monitoring, able to identify ... our customers achieve their missions\. The Work: As a Systems Administrator on the ECIW team, you... system administration, including installing, patching, troubleshooting and hardening Linux and Windows operating systems more
    Lockheed Martin (12/11/25)
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  • Sr. Systems Administrator

    Subaru of America (Van Buren Twp, MI)
    …experience and interest + At least 2-4 years of experience in a Systems Administrator role supporting Linux and Windows environments and networking + At ... that inspire and delight our customers. ROLE SUMMARY The Systems Administrator serves as a hands-on technical...skills. MAJOR RESPONSIBILITIES + Designs, implements, maintains, and monitors Linux and Windows operating systems .… more
    Subaru of America (10/10/25)
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  • System Administrator

    Gromelski & Associates, Inc. (Manassas, VA)
    Administrator Required Tasks:_** + Performs duties as System Administrator on systems using Linux , Windows , and other operating systems as ... Administrator Job Description:_** + Performs tasks as Red Hat Linux Systems Engineer and Administrator , develops kernels and other advanced solutions… more
    Gromelski & Associates, Inc. (12/17/25)
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  • Linux / Windows Senior…

    Lockheed Martin (San Diego, CA)
    …including: Network/System Administration \- Experience with server and desktop management of Linux and Windows environments \- Familiar with package deployment, ... \- Solid background/experience with Red Hat Enterprise \- Microsoft Windows Server Setup, Configuration, and Administration \- Experience providing lab… more
    Lockheed Martin (12/18/25)
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  • Principal System Administrator

    RTX Corporation (El Segundo, CA)
    …Do** : + Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. + Understanding and knowledge of ... to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world. **Sr....Group Policy, & DNS. + Advanced Red Hat Enterprise Linux knowledge. + Working as a team member in… more
    RTX Corporation (12/09/25)
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  • Systems Administrator II Generalist…

    V2X (Springfield, VA)
    …challenges with integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - Windows Server - active ... Windows Server platforms, but there are also Linux distributions as well. + The Senior Systems Administrator II shall support the mid-level internal… more
    V2X (11/15/25)
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