• Lab Manager III

    ARSIEM (Arlington, VA)
    …of mission requirements. + Perform large-scale configuration management and deployment across Windows , macOS, Linux /Unix, and other operating systems and virtual ... + 5+ years of directly relevant experience as a Linux System Administrator . + 2+ years of...optimization. + Experience with multiple operating systems to include Linux /Unix, Windows , and macOS. + Desired Certifications:… more
    ARSIEM (12/23/25)
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  • Endpoint Security Lead - CrowdStrike

    AIG (Reston, VA)
    …+ In depth knowledge and expertise with Infrastructure hardening and Security settings for Windows and Linux . + Intermediate to Expert level knowledge on ... Ownership & Administration + + Serve as the primary administrator and SME for the CrowdStrike Falcon platform. +...Windows & Active Directory, Unix/ Linux Operating Systems. + Good scripting knowledge using PowerShell,… more
    AIG (12/07/25)
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  • Sr. Specialist Cyber Infrastructure Engineer

    L3Harris (Carlsbad, CA)
    …mission-critical operations. Essential Functions: + Engineer and oversee administration of Linux (Ubuntu/Red Hat) and Windows Server enterprise environments, ... and related DoD standards. + Deep technical proficiency with Linux (Ubuntu/Red Hat) and Windows Server operating...outputs and drive remediation. + Extensive background as a Linux System Administrator in secure, classified environments,… more
    L3Harris (01/02/26)
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  • Information System Security Engineer

    CAE USA INC (Arlington, TX)
    …cost and technical volumes. + Assist in Cost Account Management. + High level system administrator skills under Windows or Linux (prefer both). + Experience ... regulations required. + Extensive experience with hardware/software platforms to include MS Windows , Linux , UNIX. + Military service or military environment… more
    CAE USA INC (12/17/25)
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  • Site Reliability Engineer II, Operations

    PennyMac (Westlake Village, CA)
    …Architect and/or AWS SysOps Administrator certification + Proficient with Windows and Linux administration + Proficient with Monitoring and Alerting ... the company's IT Infrastructure. Ideal candidates should have experience in Windows and Linux administration, in addition to experience working in AWS, as… more
    PennyMac (12/09/25)
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  • Cyber Infrastructure Support

    Leidos (Omaha, NE)
    …advanced computing solutions in a heterogeneous environment. We use a wide array of Linux and Windows systems in a tightly integrated environment with a focus ... Modernization sector, currently has an opening for a **Systems Administrator ** in our Omaha NE office. This position is...+ Advanced DoDI 8570 certification + Shell Scripting + Windows or Linux Certifications + In-depth Hardware… more
    Leidos (11/09/25)
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  • System Administration - Tiered Support

    CACI International (Annapolis Junction, MD)
    …providing troubleshooting and in-depth analysis. + Configuration and management of UNIX, Linux , and Windows operating systems. + Installation and maintenance of ... highest standards of service and reliability. We're looking for a skilled System Administrator to join our team and help maintain, troubleshoot, and optimize a wide… more
    CACI International (11/19/25)
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  • System Engineering Technician

    TEKsystems (Santa Clara, CA)
    …them. Additionally, collaborate with Infrastructure Engineers, installing and maintaining Windows / Linux platforms and using creativity while finding solutions. ... like TCP/IP, DNS, NFS, SSL, etc. * Experience with Windows , Linux , and Mac operating systems. *...with handling PDUs and Power in Labs. * System administrator level experience on Unix/ windows and knowledge… more
    TEKsystems (01/09/26)
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  • IT Systems Engineer, Sr / Top Secret / Onsite: KoP

    Lockheed Martin (King Of Prussia, PA)
    …areas located in Valley Forge, Pennsylvania\. Deep expertise in technical leadership, Linux server, Windows server, Storage and network administration are ... lifting up to 50 lbs\. independently\. \- Deep expertise in technical leadership, Linux server, Windows server, storage and network administration \- Significant… more
    Lockheed Martin (11/07/25)
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  • Systems Engineer

    Leidos (North Charleston, SC)
    …softwareintegrationin PMW120's System Engineering Division.Candidates shouldpossessan administrator -level understanding of n-tier Enterprise applications (DB, ... techniques on complex software projects. + Demonstratedexpertisein effectively managing Linux -based infrastructure. + Experience with full software development lifecycle,… more
    Leidos (01/09/26)
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