• 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 (10/17/25)
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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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  • Senior Systems Administrator…

    Mount Sinai Health System (New York, NY)
    …researchers at Mount Sinai. The Administrator is the principal technology expert for Windows and Linux systems , and help support high-performance computing ... + At least 6 years of experience in designing, administering and troubleshooting Linux and Windows systems , storage systems , network and VMs. + The… more
    Mount Sinai Health System (09/22/25)
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  • Senior Linux Systems

    General Dynamics Information Technology (Livermore, CA)
    …Description:** $10K Sign-on bonus **Job Summary:** We are seeking a highly skilled Senior Linux Systems Administrator. The role involves performing in-depth ... Required:** None **Job Family:** IT Infrastructure and Operations **Skills:** Linux ,Microsoft Server Operating Systems ,Microsoft Windows Environment… more
    General Dynamics Information Technology (11/04/25)
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  • Senior Systems Administrator…

    Amentum (Waimea, HI)
    Amentum is seeking a highly experienced Senior Linux System Administrator to oversee and manage enterprise-level Linux infrastructure in support of US Navy ... (DoD) environment. This role requires deep technical expertise in Linux systems , leadership in secure system administration,...Security Methods and Techniques + Knowledge of DoD IT systems , to include Windows , RHEL, and comprehensive… more
    Amentum (09/24/25)
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  • Senior Linux Systems

    The Boeing Company (Fairfax, VA)
    …organization Specialized United States Infrastructure Operations (SUSIO) group is currently seeking a ** Senior Linux Systems Administrator** to join the team ... VA; Fairfax, VA;** or **Chantilly, VA** . As a Senior Linux Administrator, you will play a...+ Troubleshoot and resolve complex technical issues related to Linux systems , with a focus on security… more
    The Boeing Company (11/19/25)
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  • Senior Linux System Administrator

    BAE Systems (San Diego, CA)
    …build your career with BAE Systems . BAE Systems is seeking a Senior Closed Area Linux Systems Administrator to provide comprehensive technical and ... to 40lbs) and work within controlled environments. **_In this Senior Linux System Adminisrator position you will...OU structure, and GPOs. + Install, configure, and maintain Linux -based servers and systems . + Configure, deploy,… more
    BAE Systems (09/18/25)
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  • Senior Linux Systems

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a ** Senior Linux Systems Administrator** in our **National Security Sector's (NSS) Cyber & ... us and make a difference in National** **Security!** Join our team as a ** Linux Systems Administrator** , where you'll provide crucial support for the… more
    Leidos (10/09/25)
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  • Senior Principal Linux Administrator

    RTX Corporation (El Segundo, CA)
    …and license configuration; and workstation support. + Experience with troubleshooting, patching, and support Linux , ESXi and Windows Systems . + Work as a ... and maintenance of systems hardware and software related to a Linux / Windows infrastructure for classified programs. Duties include, but are not limited… more
    RTX Corporation (09/26/25)
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  • Linux Systems Administrator

    L3Harris (Greenville, TX)
    …resolution. Essential Functions: + Integrate with a team of multidiscipline, multileveled Systems Administrators supporting Linux , Windows , and Network ... Access and Security Policies + Backup and recovery of Linux and Windows based systems ...writing of work instructions and build manuals + Support senior staff on documenting operational processes, configurations, and diagrams… more
    L3Harris (10/17/25)
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  • Senior Linux Software Engineer…

    Teradyne (North Reading, MA)
    …of computer boot principles (any architecture) + Solid knowledge of operating systems working principles ( Windows , Linux ): management of processes/threads, ... team in North Reading is looking for an experienced Linux Software Engineer III with passion for learning, developing...exactly who we're looking for! + Configure and manage Linux OS environment in both physical computers and VMs… more
    Teradyne (10/07/25)
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  • Jr./Mid-Level Networking Systems

    Belay Technologies (Annapolis Junction, MD)
    …utilizes complex equipment/ systems (ex. Network Switches, Routers, LANs, & cabling, Windows / Linux operating systems , VMware, etc.). + Must have ... experience installing, updating, and upgrading Linux Operating Systems (OS). + Must have...utilities used to create and configure network connections in Linux OS. + Must have experience implementing Windows more
    Belay Technologies (11/07/25)
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  • Linux / AWS Systems Administrator…

    Northrop Grumman (Morrisville, NC)
    …**Responsibilities will include but not be limited to the following:** + Serve as a senior Linux Systems Administrator within an AWS cloud environment for a ... Northrop Grumman Classified Solutions team is seeking an experienced ** Linux Systems Administrator** to join its dynamic...writing. + DoD 8570 Certification in a primary OS ( Windows , Linux , Cisco). We offer flexible work… more
    Northrop Grumman (11/15/25)
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  • (Mid. or Senior ) Networking Systems

    Belay Technologies (Annapolis Junction, MD)
    …utilizes complex equipment/ systems (ex. Network Switches, Routers, LANs, & cabling, Windows / Linux operating systems , VMware, etc.). + Must have ... finalist in 2021! Belay Technologies is seeking a Network Systems Administrator ( Windows ) to join our team....respond to hardware and software incidents and work with senior system administrators, at times remotely from other locations.… more
    Belay Technologies (10/01/25)
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  • Senior Platform Engineer / Linux

    RTX Corporation (Dulles, VA)
    …a safer, more secure world. Raytheon Technologies (RTX) is seeking a ** Senior Platform Engineer** with well-rounded Linux Infrastructure Engineering expertise to ... support to ensure the reliability, scalability and security. The ** Senior Platform Engineer** would be involved with supporting Echelon...**What You Will Do** + You will maintain existing systems through Linux -based tools and manage the… more
    RTX Corporation (10/09/25)
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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. * ... position offers an exciting opportunity to apply your expertise in Linux systems , virtualization, and cloud storage solutions while contributing to the overall… more
    Robert Half Technology (10/28/25)
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  • Senior Linux System Administrator

    ManTech (Fort Meade, MD)
    …resource utilization; perform capacity analysis and system planning. + Configure and manage Linux and Windows operating systems ; install, load, and enhance ... ManTech seeks a ** Senior Linux System Administrator** to join...systems administration or IT operations. + Experience with Linux , including installation, configuration, troubleshooting, and maintenance. **Security Clearance… more
    ManTech (10/14/25)
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  • Senior Platform Engineer-Perl Python…

    RELX INC (Atlanta, GA)
    Senior Platform Engineer-Perl Python Linux MySql Are you looking for an Enterprise-Wide Platforming Engineering role whereby you can drive innovation? Are you a ... applications using MySQL and SQL, ensuring data integrity and performance. + Administering Linux -based systems , Java services, and Apache web servers. + Managing… more
    RELX INC (10/25/25)
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  • DreamWorks Technology - Sr. Systems

    NBC Universal (Glendale, CA)
    …is expected to be completed during 2025. DreamWorks Animation is seeking a Senior Systems Administrator to join its multi-platform Infrastructure Engineering and ... Operations team. As a Senior Systems Administrator, you will be responsible...do this job?" + Minimum 10+ years as a Senior Linux system administration in a large… more
    NBC Universal (11/14/25)
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  • Senior Linux System Administrator

    Black Bear Technology Solutions, LLC (Adelphi, MD)
    Senior Linux System Administrator Clearance Required: Top Secret or Secret Clearance Locations: Adelphi, MD (Onsite) Position Overview: The Senior Linux ... oversees the installation, configuration, maintenance, and integrity of computing systems and software. The role involves planning, ensuring long-term system… more
    Black Bear Technology Solutions, LLC (08/23/25)
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