• Linux Administrator

    CACI International (Chantilly, VA)
    …(IAM) and integration with Linux systems . * Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) certification. * ITIL, ... Linux Administrator Job Category: Information Technology...team. The successful candidate will manage and support enterprise Linux systems that are mission-critical to national… more
    CACI International (11/13/25)
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  • Linux System Administrator

    CGI Technologies and Solutions, Inc. (Fairfax, VA)
    ** Linux System Administrator -...experience Unix system administration * Proficiency in Linux systems troubleshooting. * Experience in patch ... candidates to join our successful Federal organization as a Linux System Administrator for an...* Troubleshooting Skills: Strong ability to troubleshoot Windows and Linux operating systems . * Security and Compliance:… more
    CGI Technologies and Solutions, Inc. (12/11/25)
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  • Linux System Administrator

    Parsons Corporation (Centreville, VA)
    …Unleash your talent and redefine what's possible. **Job Description:** Our Special Programs and Systems team is hiring Linux System Administrators with a ... includes system design, configuration, and debugging of Linux systems . Note: this is a full...Must possess and maintain Top Secret SCI clearance with CI poly + Must have Linux command… more
    Parsons Corporation (11/21/25)
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  • Linux Engineer

    Arena Technical Resources, LLC (Chantilly, VA)
    …Polygraph required The Systems Engineering team is seeking a driven Senior Linux /UNIX Systems Administrator that is highly technical and mission focused. ... SUCCEED Basic Qualifications: - Ten (10) years' experience as aLinux/UNIX Systems Administrator supporting complex, multi-site enterprise-scale environments -… more
    Arena Technical Resources, LLC (11/29/25)
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  • Infrastructure Engineer/ Administrator

    CACI International (Mclean, VA)
    …Type of Travel: None * * * **The Opportunity:** CACI is seeking a highly motivated Linux System Engineer and Administrator with hands on experience with the ... demonstrated experience with multiple cloud platforms, automation technologies, and with Linux system administration. The successful candidate will ensure the… more
    CACI International (12/26/25)
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  • Platform/Infrastructure Engineer

    Nightwing (Sterling, VA)
    Linux Certifications: Linux Professional Institute (LPI), Certified Linux System Administrator (CLSA). + Infrastructure-as-Code Certifications: ... Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our… more
    Nightwing (12/26/25)
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  • Fidelis Administrator - Active TS/SCI…

    ENS Solutions (Reston, VA)
    …configure and manage operating system and application software as necessary. Support Linux & Windows systems engineering efforts in system design and ... administration. Requirements + 3+ years of experience as a system administrator + Experience with installing or...SSH or Console Port + Experience operating and maintaining Linux servers, including operating systems and applications,… more
    ENS Solutions (12/27/25)
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  • Systems Administrator

    BAE Systems (Sterling, VA)
    …our future and protect our freedom. BAE Systems is looking for a Senior Systems Administrator to provide comprehensive support to all aspects of system ... such as: + VMware Certified Professional (VCP) + RedHat Certified System Administrator /Engineer (RHCSA/RHCE) + Microsoft Certified: Windows Server… more
    BAE Systems (12/09/25)
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  • Sr. System Administrator

    Arena Technical Resources, LLC (Reston, VA)
    Sr. System Administrator Location: Reston, VA, US Job ID: ATR 17710 Job Description Job Title: Sr. System Administrator Location: Reston, VA - Onsite, ... SCIF Environment Eligibility: TS/SCI with CI Polygraph Job Description: The job duties of the Sr. System Administrator are as follows: * Plans, designs, and… more
    Arena Technical Resources, LLC (01/01/26)
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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 ... **Minimum Qualifications:** + 20+ years of experience as a Systems Administrator or Cloud Engineer supporting programs...Active Directory and networking + Proven experience as a System Administrator or Cloud Engineer with practical… more
    ManTech (12/24/25)
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  • Cloud System Administrator II

    ManTech (Annapolis Junction, MD)
    MANTECH seeks a motivated, career- and customer-oriented **Cloud System Administrator ** to join our team in Hanover, MD. Our team delivers enterprise ... Linux 2023, RHEL 8/9) and Windows Server (2016/2022) systems . + Configure and manage core services such as...**Minimum Qualifications:** + 14+ years of experience as a Systems Administrator or Cloud Engineer supporting programs… more
    ManTech (12/23/25)
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  • Systems Administrator - TS/SCI…

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking an experienced ** Systems Administrator ** to join our team in supporting mission-critical IT infrastructure. This role is ideal ... with an active TS/SCI with Poly security clearance. + Proven experience in systems administration for Windows and/or Linux environments. + Hands-on experience… more
    Leidos (01/01/26)
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  • Mid/Senior System Administrator

    Belay Technologies (Annapolis Junction, MD)
    …2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a System Administrator (SA) to join our intel team. The SA provides support for ... The SA configures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots,...VCenter/VMWare + AWS Experience + VPC, EC2, S3 + Linux and Windows operating systems + CentOS,… more
    Belay Technologies (11/19/25)
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  • Senior Systems Administrator

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking a System Administrator for a technical development program supporting the Sponsor's Attribute Services within the IDAM/ICAM ... space.As a System Administrator on this program, you will...of degree + Must be an expert in using Linux -based operating systems + Must have strong… more
    Leidos (01/09/26)
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  • Senior Systems Administrator

    UIC Government Services and the Bowhead Family of Companies (Arlington, VA)
    **Overview** SENIOR SYSTEMS ADMINISTRATOR (NAUT): Bowhead seeks a Senior Systems Administrator to support our customer on the Nautical contract in the ... CISSP, CISM, or equivalent advanced security certification + Red Hat Certified System Administrator (RHCSA) + Kubernetes certifications (CKA, CKAD) Physical… more
    UIC Government Services and the Bowhead Family of Companies (01/06/26)
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  • Senior System Administrator

    Synergy ECP (Columbia, MD)
    Senior System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Company Description: Synergy ECP is a Service Disabled ... provide a broad range of services to the defense, intelligence and health care industries. In an ultra- competitive...Configuration and Maintenance of Virtual Machines ? VCenter/VMWare o Linux and Windows operating systems ? CentOS,… more
    Synergy ECP (10/15/25)
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  • Systems Administrator

    Guidehouse (Bethesda, MD)
    …like Salt and Ansible for infrastructure automation and orchestration + Set up administrator and service accounts, maintain system documentation, tune system ... **Job Family** **:** Systems Engineering **Travel Required** **:** None **Clearance Required**...Secret SCI (TS/SCI) **What You Will Do:** + Perform Linux and Windows builds, installs, configuration, administration, and troubleshooting… more
    Guidehouse (12/10/25)
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  • Systems Administrator

    Leonardo DRS, Inc. (Frederick, MD)
    … administration - experience with Cisco\Meraki and ESXi preferred + Working knowledge of Linux systems and common services + Experience in current principles and ... www.leonardodrs.com . **Job Summary** In this role you will perform network and system administration duties for Leonardo DRS's on-premesis systems and networks.… more
    Leonardo DRS, Inc. (12/23/25)
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  • System Engineer (TS/SCI)- Senior or Mid…

    Vexterra Group (Bethesda, MD)
    …to Microsoft Certified Solutions Expert (MCSE) Certification or MCSA (Microsoft Certified System Administrator ) + Experience with SAN or network storage setup ... Job Description: Vexterra is looking to fill a Windows Systems Engineer and Administrator position within the Analysis Solutions Division (ASD) to support the… more
    Vexterra Group (10/14/25)
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  • Top Secret AWS Engineer

    Insight Global (Vienna, VA)
    Job Description Key Responsibilities Systems Operations & Maintenance Perform daily system health checks, log reviews, and performance monitoring across Linux ... performing STIGs and supporting system compliance. Active TS Clearance with SCI and CI Poly eligibility. Ability to work onsite in Vienna, VA at least 3 times… more
    Insight Global (01/06/26)
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