• Senior Systems and Network

    SAIC (Battle Creek, MI)
    **Description** SAIC is seeking a highly skilled Senior Systems & Network Administrator to support the AOC WS Falconer Program. This role combines expertise ... in both systems and network administration to ensure the installation, configuration, sustainment, and...XenApp, Storefront), McAfee ePO + ACAS/Nessus, Red Hat Enterprise Linux (RHEL), UNIX + Cisco Catalyst/Nexus switches, routers, UCS,… more
    SAIC (09/16/25)
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  • Senior Systems Administrator III…

    V2X (Bangor, WA)
    …challenges with integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator III Generalist - active TS/SCI clearance to ... (CI) Polygraph. Under the guidance of the Principal Systems Administrator , the Senior Systems Administrator ...server operating systems (OSs) (Windows Server, Red Hat Enterprise Linux , etc.) and server applications and services, such as… more
    V2X (09/05/25)
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  • Senior Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …5 + years of related experience **US Citizenship Required:** Yes **Job Description:** Senior Systems Administrator Own your opportunity to join our team, ... a Systems Administrator or similar role + Strong experience with Linux and Windows-based systems administration. + Knowledge of cloud platforms (AWS, Azure,… more
    General Dynamics Information Technology (09/16/25)
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  • Senior Red Hat/ Linux Information…

    EPS Corporation (Panama City Beach, FL)
    … hardware design and integration. Firewall administration experience. Experience with Red Hat/ Linux network deployment in an enterprise VMWare virtual computing ... Senior Red Hat/ Linux Information Systems Security...is currently seeking A candidate for Cyber Security Systems Administrator at Panama City Beach, FL. The successful candidate… more
    EPS Corporation (10/15/25)
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  • Principal Field Service Engineer/ Sr

    Northrop Grumman (Aurora, CO)
    …Windows Server 2016Linux: Linux +, LPIC-1, or Red Hat Certified Systems Administrator , Cisco Certified Network Associate (CCNA) Primary Level Salary Range: ... is looking to add a **Principal Electronics Engineer - Field Service Engineer (FSE)/ Sr . Principal Electronics Engineer - Field Service Engineer (FSE)** to join our… more
    Northrop Grumman (10/07/25)
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  • Senior Linux System Admin

    Citigroup (Irving, TX)
    …Overview** **:** We are seeking an accomplished and technically astute Level 3 Linux System Administrator to join our high-performance infrastructure team. This ... individual will serve as a subject matter expert (SME) on Linux systems, providing deep operational insight, advanced troubleshooting, performance tuning and… more
    Citigroup (09/23/25)
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  • Sr . Specialist Cyber Infrastructure…

    L3Harris (Carlsbad, CA)
    …ability to analyze outputs and drive remediation. + Extensive background as a Linux System Administrator in secure, classified environments, with expertise in ... sea and cyber domains in the interest of national security. Job Title: Sr . Specialist, Cyber Infrastructure Engineer Job Code: 29132 Job Location: Carlsbad, CA Job… more
    L3Harris (09/25/25)
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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 ... GitLab, Ansible, Kubernetes, OpenShift, and/or Docker + **Certifications:Microsoft Certifications,Cisco Network Certifications, Linux Certifications,AWS Certifications, Geospatial certifications** Come… more
    Leidos (07/29/25)
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  • Systems Administrator , Senior

    BOOZ, ALLEN & HAMILTON, INC. (Fort Meade, MD)
    …may not be readily available in production environments + Experience as a network administrator or systems engineer + Experience with Assured Compliant ... Systems Administrator , Senior The Opportunity: Are you...mentor and supervise team members. You'll support Windows and Linux systems engineering efforts in system design and evaluation,… more
    BOOZ, ALLEN & HAMILTON, INC. (10/08/25)
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  • Senior Systems Administrator

    SMX (Patuxent River, MD)
    Senior Systems Administrator (4521)at SMX(View all jobs) (https://www.smxtech.com/careers/) Patuxent River, MD SMX is looking for a highly motivated ** Senior ... Patuxent River NAS in southern Maryland. As the Systems Administrator , you will join a team of highly-driven, supportive,...+ Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and… more
    SMX (10/09/25)
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