• Linux Administrator , Senior

    Amentum (Hanover, MD)
    …continuously trying to stay ahead of the next challenge. **Responsibilities:** This Senior Linux administrator position will provide candidates with ... & Intel space? If so, look no further. Amentum is seeking a ** Linux Administrator , Senior ** to join our team of passionate individuals in **Hanover,… more
    Amentum (11/21/25)
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  • Linux Administrator , Senior

    Amentum (Baltimore, MD)
    …continuously trying to stay ahead of the next challenge. **Responsibilities:** This Senior Linux administrator position will provide candidates with ... & Intel space? If so, look no further. Amentum is seeking a ** Linux Administrator , Senior ** to join our team of passionate individuals in **Hanover,… more
    Amentum (01/06/26)
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  • Senior Linux Systems…

    Leidos (Camp Springs, MD)
    …of our critical Red Hat Enterprise Linux environment. As a Senior System Administrator , you'll be instrumental in designing, implementing, and maintaining ... Security+ or Systems Security Certified Practitioner (SSCP)). + Training (DISA-US1384 DCWF Linux System Administrator / DISA-US1390 DCWF Windows Systems … more
    Leidos (12/20/25)
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  • Senior Linux System…

    Belay Technologies (Annapolis Junction, MD)
    …runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Senior Linux System Administrator (SA). The SA provides support for implementation, ... servers, databases, and workstations as well as VMware and Linux server instances and an extensive network infrastructure (LAN...on an on-call basis. + The Level 3 System Administrator shall possess the following capabilities: + Provide support… more
    Belay Technologies (01/04/26)
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  • Senior Linux System…

    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 ... (Required): + CompTIA Security+ CE or CompTIA Server+ CE + Red Hat Certified System Administrator (RHCSA) + MCSA, MAC OS, or MCP + Must meet DoD 8750 and 8140… more
    Black Bear Technology Solutions, LLC (11/21/25)
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  • Senior Linux System…

    ManTech (Fort Meade, MD)
    ManTech seeks a ** Senior Linux System Administrator ** to join our team in **Ft. Meade, MD** . In this role, you will provide support for implementation, ... utilization; perform capacity analysis and system planning. + Configure and manage Linux and Windows operating systems; install, load, and enhance OS software for… more
    ManTech (12/24/25)
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  • Senior Linux System…

    GovCIO (Annapolis, MD)
    …referral to this job (https://careers-govcio.icims.com/jobs/6348/ senior - linux -system- administrator /job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) ... **Overview** GovCIO is currently hiring for an experienced Linux System Administrator with an active...administration duties will be included in this role. + Senior -level RedHat Linux server administration experience, experience… more
    GovCIO (11/07/25)
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  • Senior Linux System…

    ManTech (Laurel, MD)
    MANTECH seeks a motivated, career and customer-oriented ** Linux ** **System Administrator ** to join our team in **Laurel, MD.** You will be part of a dedicated ... include but are not limited to:** + Configure and manage Linux (Rocky) operating systems. Installs/loads operating system software, troubleshoots maintains integrity… more
    ManTech (12/25/25)
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  • 337 - Senior Linux Systems…

    ARSIEM (Annapolis Junction, MD)
    …every client you work with. ARSIEM is looking for a motivated and experienced Linux System Administrator for a small, diverse team that provides end-to-end ... software, systems, and network engineering services to support Integrated Discovery Operations (IDO). You will lead, evolve, and maintain a dynamic, modern DevOps architecture, often based on open-source technology and not relying on corporate baselines, to… more
    ARSIEM (10/30/25)
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  • Senior Systems Administrator

    CACI International (Annapolis Junction, MD)
    …Type of Travel: Local * * * **The Opportunity:** CACI is seeking a Senior Linux Systems Administrator to provide support for implementation, troubleshooting ... Senior Systems Administrator Job Category: Information...in the resolution process + Configure and manage primarily Linux /Unix (or other applicable) operating systems and installs/loads operating… more
    CACI International (01/07/26)
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  • System Administrator - Linux

    Leidos (Annapolis Junction, MD)
    **Description** **System Administrator - Linux ** **Leidos** has a new and exciting opportunity for a **System Administrator - Linux ** in our **National ... and will respond to hardware and software incidents and work with senior system administrators, at times remotely from other locations. Other responsibilities… more
    Leidos (01/06/26)
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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, ... better. GDIT has an immediate opening for a Systems Administrator to fill a Core Services position supporting the...Administrator or similar role + Strong experience with Linux and Windows-based systems administration. + Knowledge of cloud… more
    General Dynamics Information Technology (01/05/26)
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  • Senior Cloud System Administrator

    ManTech (Annapolis Junction, MD)
    MANTECH seeks a motivated, career and customer-oriented ** Senior ** **Cloud System Administrator ** in Hanover, MD. The team delivers enterprise infrastructure ... for Windows Server 2022 environments, Windows 10/11 client systems, and various Linux distributions (eg, Rocky,CentOS, RHEL) within both cloud and on-premise. +… more
    ManTech (12/24/25)
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  • Senior Database Administrator

    Leidos (Camp Springs, MD)
    **Description** Leidos Digital Modernization sector is seeking an ** Senior Database Administrator ** - Hosting to support **USCIS Enterprise Automation & Unified ... integrate automation, cloud, hosting, and unified communications for 30 000+ end‑users. The Senior Database Administrator will be a key member of the Hosting… more
    Leidos (12/06/25)
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  • Application Systems Administrator

    ASM Research, An Accenture Federal Services Company (Annapolis, MD)
    …and design. Provides direction to other IT Administrators on the project in a senior administrator capacity. Considered a technical specialist in a variety of IT ... administrator disciplines. + Responsible for installing, configuring, and maintaining...+ Patching, configuration, and security associated with Windows, RHEL Linux , Photon, VMWare vSphere. + Integration with enterprise logging… more
    ASM Research, An Accenture Federal Services Company (01/13/26)
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  • Senior Cloud System Administrator

    ManTech (Hanover, MD)
    ManTech seeks a motivated, career- and customer-oriented **Sr** **Cloud System Administrator ** to join our team in **Hanover, MD.** Our team delivers enterprise ... incidents and performing root cause analysis + Administer and troubleshoot various Linux distributions (eg, Ubuntu, CentOS, RHEL) within both cloud and on-premise… more
    ManTech (12/10/25)
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  • Senior System Administrator

    St. George Tanaq Corporation (Suitland, MD)
    Senior System Administrator - Network Operation Center WFH Flexible*Suitland, MD (http://maps.google.com/maps?q=Suitland+MD+USA) Job Type Full-time Description ... us, visit https://tanaq.com/tanaq-technical-services. **About the Role** We are seeking a ** Senior System Administrator - Network Operation Center** to support… more
    St. George Tanaq Corporation (11/14/25)
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  • Senior Systems Administrator 10k…

    Leidos (Annapolis Junction, MD)
    **Description** **Leidos** has a new and exciting opportunity for a Senior Systems Administrator in our **Intelligence Sector's (NSS) Cyber & Analytics Business ... and make a difference in National** **Security!** As a Senior Systems Administrator you will play a...Administration and SSP/Security support for the program in both Linux and Windows environments. + Implement, troubleshoot, and maintain… more
    Leidos (11/15/25)
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  • Senior Systems Administrator

    BAE Systems (Washington, DC)
    …incentives may be available based on position level and/or job specifics. ** Senior Systems Administrator ** **118971BR** EEO Career Site Equal Opportunity ... anticipated decision expected by Q3/Q4 of 2026.** The **System Administrator ** responsibilities include, but are not limited to: +...that powers networks and operating systems such as UNIX, Linux , and Windows. + Install and configure hardware and… more
    BAE Systems (12/04/25)
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  • Senior Systems Administrator

    BigBear.ai (Annapolis Junction, MD)
    Overview BigBear.ai is seeking a Senior Systems Administrator with an active TS/SCI with Poly clearance to join and assist and meet mission needs for our ... and security + Support patching, upgrading, and migrating of Linux systems and VMs. + Support agile activities for...and 10+ years of SA experience + Proficient with Linux . Minimum of 3 years Linux system… more
    BigBear.ai (12/30/25)
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