• HBSS Administrator

    Leidos (Fort Belvoir, VA)
    …STIG configurations and remediation actions to ensure audit readiness. **Patching and System Updates:** + Manage and deploy operating systems and application ... deployment success and troubleshoot any issues arising from updates. ** System Hardening:** + Harden systems by applying...experience, and ACAS expertise. + Expert with Microsoft Windows, Linux , and system virtualization in a secure… more
    Leidos (12/03/25)
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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...via an LDAP interface to hundreds of various Sponsor systems Required Qualifications + Active TS /SCI with… more
    Leidos (10/10/25)
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  • Systems Administrator 2 (Bluemont,…

    William C Brown Inc (Springfield, VA)
    Systems Administrator 2 (Bluemont, VA) EOE Statement We are an equal employment opportunity employer. All qualified applicants will receive consideration for ... by law. Description WCBinc is looking for a Sr. Systems Administrator to provide support for implementation,...and troubleshooting capabilities Experience with Microsoft Windows 2008/12 operating system and Linux Red Hat Good oral… more
    William C Brown Inc (10/23/25)
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  • Systems Administrator

    SAIC (Chantilly, VA)
    **Description** SAIC is seeking a highly motivated Systems Administrator to join our team of professionals providing technical and program services to the US ... land, at sea, in air, and in space. The Systems Administrator will be part of a...ESXi blade servers, HP storage, Cisco switches, Windows and Linux servers, and high-powered GPU workstations. The primary functions… more
    SAIC (11/15/25)
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  • Lead Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, mission-oriented **Senior Systems Administrator ** to join our team in **Chantilly, VA.** As the Lead Senior Systems ... limited to:** + Lead and supervise a team of system administrators (Windows/ Linux /VMWare) and IT support staff....or high school diploma/GED and 13 years of relevant systems administration experience with 3 + years in a… more
    ManTech (12/19/25)
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  • Log Aggregation Administrator , SME

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    …the centralized collection, processing, and analysis of log data from various IT systems . This role is critical for monitoring system performance, enhancing ... **Log Aggregation Administrator , SME** **Category:** Administration **Main location:** United States,...Knowledge: Familiarity with the following is essential: o Operating systems , including Linux and Windows. o Cloud… more
    CGI Technologies and Solutions, Inc. (12/11/25)
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  • Cloud Administrator

    CACI International (Chantilly, VA)
    …Responsibilities:** + Build, configure, and administrate all aspects of Red Hat Enterprise Linux (RHEL) + Configure systems to meet STIG requirements + Manage ... system faults and runs diagnostic tests on operating systems to detect and resolve problems + Document ...system architecture and administration process _Qualifications_ + **Active TS /SCI with Poly** + Bachelor's degree in a related… more
    CACI International (12/03/25)
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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 in **Chantilly, VA.** **Responsibilities include but… more
    ManTech (11/19/25)
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  • Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include ... or ability to obtain one within 180 days. + Experience with Windows and Linux operating systems . + Experience providing help-desk end-user support for common… more
    ManTech (12/03/25)
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  • Information System Security Engineer…

    Amentum (Warrenton, VA)
    …program is to support, operate, and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN- TS ES) which is a ... intimate knowledge of security design best practices for information systems . throughout the system development life cycle...at multiple classifications levels. **Requirements:** * Must have active Top - Secret clearance with SCI or TS more
    Amentum (12/05/25)
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