• PWE Systems Administrator (ISSA)…

    RTX Corporation (Richardson, TX)
    … Clearance:** DoD Clearance: Secret Collins Aerospace, Digital Technology, is hiring a Systems Administrator for our Secure Labs support team. A minimum ... Administration, and Virtualization Technologies (VM Ware, etc.) + Experience as a Linux Systems Administration + Experience with Compliance frameworks (RMF,… more
    RTX Corporation (01/08/26)
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  • HBSS Administrator

    Leidos (Fort Belvoir, VA)
    …Microsoft Defender. Administrator will also be responsible in applying Security Technical Implementation Guides (STIGs), managing system patches, and ... arising from updates. ** System Hardening:** + Harden systems by applying best practices and federal security...experience, and ACAS expertise. + Expert with Microsoft Windows, Linux , and system virtualization in a secure… more
    Leidos (01/13/26)
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  • Modernization Cyber Systems…

    Lockheed Martin (Hanover, MD)
    … Linux distributions such as RHEL, CentOS, Ubuntu, and Debian\. Knowledge of Linux systems processes, file systems , networking and offline repository ... to undermine our way of life\. As a cyber security professional at Lockheed Martin, you'll protect the networks...and manage UNIX and Windows \(or other applicable\) operating systems and installs/loads operating system software, troubleshoot,… more
    Lockheed Martin (01/08/26)
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  • TS/SCI System Administrator

    Insight Global (Grand Forks, ND)
    Job Description Insight Global is looking for a TS/SCI Systems Administrator sitting fully on-site in Grand Forks, ND. This individual will collaborate with the ... that includes RedHat OpenStack, Dell hardware, NetApp storage solutions, and cloud-based systems hosted on AWS. You'll be responsible for maintaining both local and… more
    Insight Global (01/17/26)
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  • Server Administrator

    Calspan (Buffalo, NY)
    Overview Calspan is seeking a highly skilled Server Administrator to manage our core infrastructure and High Performance Computing (HPC) environments. This role is ... Directory, GPO, Domain Controllers, Azure, DHCP, DNS),Red Hat Enterprise Linux (RHEL)clusters, virtualization layer, andHPE Alletra/Nimble storagesystems. You will… more
    Calspan (01/17/26)
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  • Server Administrator (Server…

    Kinder Morgan (Houston, TX)
    …and application teams to support infrastructure operations + Provide support for Linux -based systems , (as required) + Maintain technical documentation and follow ... Server Administrator (Server Administrator , Specialist OPS -...physical and virtual Windows Server environments (2019-2025), and common Linux distributions + Support VMware virtualization infrastructure, including ESX… more
    Kinder Morgan (01/17/26)
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  • IT Systems Administrator

    ManTech (Chantilly, VA)
    …180 days. + System Experience: Experience with both Windows and Linux operating systems . + End-User Support: Experience providing help-desk support for ... **MANTECH** seeks a motivated, career and customer-oriented **IT Systems Administrator ** to join our team...+ Certification: Current DoD 8570 IAT II certification (eg, Security +, SSCP) or the ability to obtain one within… more
    ManTech (11/19/25)
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  • Systems Administrator /Integrator…

    BigBear.ai (Columbia, MD)
    Overview BigBear.ai is seeking a System Administrator /Integrator to manage IT systems for analytic solution and provide prompt solutions to ensure smooth ... Microsoft support engineers + Evaluate, plan, test, and execute security patching What you need to have + Bachelor's...to have + Bachelor's degree in Computer Science, Information Systems , or related field + 6-10 years of experience… more
    BigBear.ai (01/16/26)
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  • Systems Administrator

    ManTech (Fort Meade, MD)
    **MANTECH** seeks an experienced and passionate, career and customer-oriented ** System Administrator ** to join our team in Ft. Meade, MD. **Responsibilities ... and software in support of maintenance, developing and testing of information technology systems + Administration of Linux (ie, Redhat/Rocky 8) + Configuring and… more
    ManTech (12/28/25)
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  • Server Administrator II

    CAE USA INC (Tampa, FL)
    … components & services. + Conducts log analysis and patch management to ensure high system integrity and security + Effectively use Help Desk ticketing system ... vision is to be the worldwide partner of choice in defense and security , and civil aviation by revolutionizing our customers' training and critical operations with… more
    CAE USA INC (11/18/25)
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