• Linux Systems Administrator

    Leidos (Springfield, VA)
    **Description** Leidos is seeking an experienced, customer-facing Linux Systems Administrator to join our dynamic team supporting mission-critical infrastructure ... and interact professionally with customers and stakeholders. + Active TS / SCI with CI Polygraph. + DoD 8570/8140...Server administration in hybrid environments. + Red Hat Certified System Administrator (RHCSA) or equivalent certification. +… more
    Leidos (01/16/26)
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  • Senior System Administrator

    Amentum (Springfield, VA)
    …& Intel space? If so, look no further. Amentum is seeking a **Senior System Administrator ** to join our team of passionate individuals in **Springfield, VA** ... systems including the transition and migration of corporate systems * Monitor and report on system ...(this role is not remote). **Clearance Required:** * Active TS / SCI with ability to obtain a poly… more
    Amentum (11/20/25)
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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,...degree and/or 10+ years of experience * Security Clearance: TS / SCI required with the ability to obtain… more
    CGI Technologies and Solutions, Inc. (12/11/25)
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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 ... as leading, mentoring, and coordinating with a team of System Administrators. You will play a key role in...**Clearance Requirements:** + Must possess a current / active TS / SCI with Polygraph **Physical Requirements:** + Must… more
    ManTech (12/19/25)
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  • Mission Support Administrator - Full…

    Patriot Group International, Inc (Chantilly, VA)
    …network across the workforce + High level of discretion and confidentiality handling sensitive information + Ability to train, mentor, and guide junior ... Mission Support Administrator - Full Performance Position Type: Full-Time, Exempt...Full-Time, Exempt Work Location: Chantilly, VA; McLean, VA Clearance: TS / SCI with polygraph Shift: M-F 9A-5P Patriot… more
    Patriot Group International, Inc (01/15/26)
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  • Tier 3 Network Administrator

    CACI International (Reston, VA)
    Tier 3 Network Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS / SCI with Polygraph ... for critical outages in the Network. **Responsibilities:** In this role the Network Administrator will be responsible for: + Performing System patching and IAVA… more
    CACI International (12/11/25)
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  • Senior System Administrator

    SAIC (Fort Belvoir, VA)
    **Description** The Senior System Administrator will provide support for operational intelligence integration and data-centric operations for customers across ... Server 2012/Windows Server 2016 Certification **CLEARANCE REQUIREMENT:** + Possess a current TS / SCI clearance with ability to obtain a CI polygraph REQNUMBER:… more
    SAIC (11/19/25)
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  • HBSS Administrator

    Leidos (Fort Belvoir, VA)
    …**Key Responsibilities:** + Continuous upkeep, monitoring, analysis, and response to Information System , network and security events using Endpoint Security ... and remediation actions to ensure audit readiness. **Patching and System Updates:** + Manage and deploy operating systems...verbal presentation skills + Must possess an active DoD TS / SCI Clearance at time of consideration. **Preferred… more
    Leidos (01/13/26)
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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 ... characteristic protected by law. Description WCBinc is looking for a Sr. Systems Administrator to provide support for implementation, troubleshooting and… more
    William C Brown Inc (10/23/25)
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  • Principal Support Administrator

    Patriot Group International, Inc (Chantilly, VA)
    … Position Type: Full-Time, Exempt Work Location: Chantilly, VA; McLean, VA Clearance: TS / SCI with polygraph Shift: M-F 9A-5P Patriot Group International Inc. ... perspective. We are looking to hire a Principal Support Administrator to join our team in the Northern Virginia...Required Security Clearance: + Minimum of a US Government TS / SCI with Polygraph Preferred Qualifications + Associate… more
    Patriot Group International, Inc (12/17/25)
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