• Linux Systems Administrator

    Parsons Corporation (Centreville, VA)
    …server and networking equipment rack installations. **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required ... what's possible. **Job Description:** Are you a skilled **Linux Systems Administrator ** looking for an opportunity to...**Citizenship:** Must be a US Citizen. + **Clearance:** Active TS / SCI clearance with Polygraph is required. +… more
    Parsons Corporation (12/20/25)
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  • Linux Systems Administrator

    Parsons Corporation (Centreville, VA)
    …server and networking equipment rack installations. **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required ... what's possible. **Job Description:** Are you a skilled **Linux Systems Administrator ** looking to work on mission-critical...in this role, you will need: + **Clearance:** Active TS / SCI clearance with Polygraph is required. +… more
    Parsons Corporation (12/20/25)
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  • Senior Systems Administrator

    The Boeing Company (Herndon, VA)
    …based on candidate eligibility. **Security Clearance** This position requires an active US Top Secret / SCI Security Clearance (US Citizenship Required). (A US ... (IDT&S) organization Specialized Infrastructure Operations group is currently seeking a **Senior Systems Administrator ** to join the team in **Herndon, VA** .… more
    The Boeing Company (12/25/25)
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  • Systems Administrator - COMSEC

    KBR (Chantilly, VA)
    …travel. + Working Hours: Standard 40 hours per week. Qualifications: Required: + Clearance: Top Secret SCI with Polygraph. + Experience: 3+ years' experience ... Title: Systems Administrator - COMSEC Belong. Connect....in STEM degree + Certifications: IAW NRO Directive 50-05, information Assurance Workforce Enhancement Program (IAWEp) category information more
    KBR (12/06/25)
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  • Lead Windows Systems Administrator

    General Dynamics Information Technology (Chantilly, VA)
    …ID:** PRX25822 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None ... of related experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead Windows… more
    General Dynamics Information Technology (12/29/25)
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  • SAP NS2 Senior Cloud Engineer/ Systems

    SAP (Herndon, VA)
    …benefit options for you to choose from. **SAP NS2 Senior Cloud Engineer/ Systems Administrator - Onsite - Chantilly, VA** **Active TS SCI with Polygraph ... Information Security, Engineering, Information Technology. MA/MS Preferred. + Top Secret Clearance with Polygraph Note: The job description is meant… more
    SAP (10/21/25)
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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 ... or high school diploma/GED and 13 years of relevant systems administration experience with 3 + years in a...**Clearance Requirements:** + Must possess a current / active TS / SCI with Polygraph **Physical Requirements:** + Must… more
    ManTech (12/19/25)
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  • Linux Systems Administrator

    Parsons Corporation (Centreville, VA)
    …server and networking equipment rack installations **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required ... what's possible. **Job Description:** Parsons is seeking a Linux Systems Administrator . The candidate will support both...a US Citizen + Candidate must have a current TS / SCI clearance with Poly + Experience in… more
    Parsons Corporation (01/08/26)
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  • Systems Administrator - TS

    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 ... for a professional with solid systems administration expertise, particularly in pipeline automation and/or VMware...of a degree. + US Citizen with an active TS / SCI with Poly security clearance. + Proven… more
    Leidos (01/01/26)
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  • Systems Administrator III

    Noblis (Chantilly, VA)
    …+ Active Top Secret ( TS ) clearance with eligibility for Sensitive Compartmented Information ( SCI ) and ability to obtain a Counterintelligence ... Responsibilities As a Systems Administrator , you will be responsible...web servers. You will support the multi-enclave environment (Unclassified, Secret , and Top Secret / SCI more
    Noblis (12/30/25)
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  • Windows Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a skilled and motivated **Windows Systems Administrator ** to join our team of top Information Technology and Analytic professionals in ... Certified Professional (VCP) credential **Security Clearance Requirements** + An active/current TS / SCI with Polygraph is required. **Physical Requirements** +… more
    ManTech (12/03/25)
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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 ... manuals or similar documentation. **Clearance Requirements:** + Must have a current/active TS / SCI w/Polygraph. **Physical Requirements:** + Must be able to… more
    ManTech (12/03/25)
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  • Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated and skilled **Senior Systems Administrator ** to join our sustainment team in **Chantilly, VA.** In this role, you will support a ... limited to:** + Provide hands-on O&M support for enterprise systems , including break-fix resolution and routine sustainment tasks +... and group policy configuration **Clearance Requirements:** + Active TS / SCI with CI Polygraph is required for… more
    ManTech (12/13/25)
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  • IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include but ... user-friendly technical documentation. **Clearance Requirements:** + Must have a current/active TS / SCI w/Polygraph. **Physical Requirements:** + Must be able to… more
    ManTech (11/19/25)
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  • Senior Systems Administrator

    Leidos (Chantilly, VA)
    …service that provides attribute data via an LDAP interface to hundreds of various Sponsor systems Required Qualifications + Active TS / SCI with Polygraph + BS ... **Description** Leidos is seeking a System Administrator for a technical development program supporting the...+ Must be an expert in using Linux-based operating systems + Must have strong Bash skills + Must… more
    Leidos (01/09/26)
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  • Linux System Administrator -Senior Level

    Nightwing (Sterling, VA)
    …have a broad range of experience supporting mission critical networks and computer systems . CLEARANCE REQUIREMENT: TS / SCI with POLY Responsibilities + Assist ... defense, civil, and commercial markets. Nightwing is seeking a highly motivated Systems Administrator to join a mature program in the Sterling VA location. The… more
    Nightwing (12/20/25)
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  • Fidelis Administrator - Active TS

    ENS Solutions (Reston, VA)
    …Fidelis appliance stack and network issues to ensure it remains fully operational + Active TS / SCI clearance; willingness to take a polygraph exam + HS diploma or ... deployments and configuration management. + Experience as a network administrator or systems engineer. + Experience in using Active Directory to manage… more
    ENS Solutions (12/27/25)
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  • System Administrator , Staff

    Parsons Corporation (Chantilly, VA)
    …experience + Top Secret ( TS ) security clearance with eligibility for Secret Compartmented Information ( SCI ) + Willingness to submit to a ... efforts. The position will provide "day-to-day" support for Collateral, Sensitive Compartmented Information ( SCI...and software build processes **Security Clearance Requirement:** An active Top Secret SCI security clearance… more
    Parsons Corporation (01/08/26)
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  • Physical Security System Administrator 4

    M. C. Dean (Chantilly, VA)
    …and may meet eligibility requirements, including US Citizenship, for access to classified information ; **ACTIVE TS / SCI w/ POLYGRAPH clearance is REQUIRED** ... Security System Administrator 4** to join our **Security and Electronic Systems (SES)** business Unit. As part of **(SES)** Strategic Business Unit you will… more
    M. C. Dean (10/23/25)
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  • Pr./System Admin - Shift Work ( Top

    Northrop Grumman (Chantilly, VA)
    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Top Secret TRAVEL: No **Description** At Northrop Grumman, our employees have ... **Must have US Citizenship with a current or active Top Secret level clearance and the ability...Level 2 certification** **Preferred Qualifications:** + Red Hat Certified Systems Administrator (RHCSA) certification + Experience with… more
    Northrop Grumman (11/25/25)
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