• Senior System Administrator

    RTX Corporation (Tucson, AZ)
    …infrastructure problems. **What You Will Do:** + Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux ... to prevent security threats, protect the integrity of our systems and support Raytheon IT infrastructure around the world.... and support Raytheon IT infrastructure around the world. Senior System Administrators, internally known as … more
    RTX Corporation (10/15/25)
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  • Senior Network and Computer Systems…

    NANA Regional Corporation (South Burlington, VT)
    We are seeking an experienced Senior Network and Computer Systems Administrator to lead the administration , security, and optimization of the USCIS ... Lead the administration of enterprise network and system environments supporting USCIS mission systems and..., with increasing levels of responsibility. + Expertise in Windows Server administration , Linux systems … more
    NANA Regional Corporation (10/16/25)
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  • Systems Engineer Senior - Level 3

    Lockheed Martin (Fort Worth, TX)
    …Qualifications:** * Proficient with Windows and Linux/Unix operating systems configuration and troubleshooting\. * IT System /Software Troubleshooting ... related discipline, or equivalent experience/combined education **Desired Skills:** * Systems administration experience with servers and network… more
    Lockheed Martin (07/26/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    **Description** The National Security Sector at Leidos is seeking a ** Senior System Administrator** to join a dynamic team based in **Tysons Corner, VA** . This ... exciting opportunity allows you to apply your expertise in system administration and software programming while supporting a small team responsible for managing… more
    Leidos (07/29/25)
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  • Senior Systems Engineer

    GovCIO (Fairfax, VA)
    **Overview** GovCIO is currently hiring for a Senior Systems Engineer with an active Secret clearance to provide administration and tier 3 operational ... USD $165,000.00 /Yr. Submit a referral to this job (https://careers-govcio.icims.com/jobs/6349/ senior - systems -engineer/job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) **Location** _US-VA-Fairfax_ **ID** _2025-6349_ **Category** _IT… more
    GovCIO (08/02/25)
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  • Vice President for Finance…

    Roanoke College (Salem, VA)
    …with integrity and foresight, while leading the modernization of Roanoke's financial and administrative systems to meet the demands of a rapidly changing higher ... and IT operations and a demonstrated ability to modernize administrative systems . * A demonstrated ability to...2026. The project focuses on upgrades to the HVAC system , windows , bathrooms, the kitchen, outdoor spaces,… more
    Roanoke College (10/11/25)
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  • Senior System Administrator (C)

    SimIS Inc. (Dahlgren, VA)
    … system administration , and information assurance support for combat system interface simulation, test, analysis, and training systems associated with ... + Experience in implementing and maintaining complex computer system network administration activities. + Experience in Microsoft Windows computer operating … more
    SimIS Inc. (08/07/25)
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  • Senior Linux System Administrator

    Black Bear Technology Solutions, LLC (Adelphi, MD)
    …Senior Linux System Administrator is responsible for leading system administration activities. This position oversees the installation, configuration, ... enhancements to improve performance and reliability. Key Responsibilities: + Lead system administration activities across ARLEN and CARLEN networks. + Assign… more
    Black Bear Technology Solutions, LLC (08/23/25)
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  • Senior IT Systems Engineer

    ManTech (Chantilly, VA)
    …including documentation required for A&A IAW ICD 503. + Experience with Windows administration , Active Directory, administrative scripting languages, and ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior IT Systems Engineer** to join...and experience with virtual infrastructure technologies, all components of Windows and Linux system infrastructure, Local Area… more
    ManTech (08/20/25)
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  • Mid- Senior Linux Systems…

    KBR (Sioux Falls, SD)
    …and protects Earth. KBR has an immediate need for an energetic and dynamic Mid- Senior Systems Administrator in support of the United States Geological Survey ... EROS Information Technology Services Division (ITSD) is seeking a Mid- Senior Systems Administrator to join a diverse...required. Essential Job Functions: + Lead and support the administration of Linux (RHEL, OEL, Rocky) and Windows… more
    KBR (09/23/25)
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