• 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 equivalent) or ability to obtain one within 180 days. + Experience with Windows and Linux operating systems . + Experience providing help-desk end-user support… more
    ManTech (08/20/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    **Description** The National Security Sector at Leidos is seeking a **Senior System Administrator ** to join a dynamic team based in **Tysons Corner, VA** . This ... while supporting a small team responsible for managing a wide range of mission-critical systems . **Key Details** : + Work hours fall within the core shift range of… more
    Leidos (07/29/25)
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  • System Administrator

    CACI International (Chantilly, VA)
    System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: Regular ... Local * * * **The Opportunity:** CACI is seeking a highly skilled **System Administrator ** to join our team in supporting a Government customer. The ideal candidate… more
    CACI International (08/15/25)
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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 ... to obtain one within 180 days. + System Experience: Experience with both Windows and Linux operating systems . + End-User Support: Experience providing help-desk… more
    ManTech (08/20/25)
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  • Log Aggregation Administrator , SME

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    …are beneficial. * Knowledge: Familiarity with the following is essential: o Operating systems , including Linux and Windows . o Cloud computing concepts and ... **Log Aggregation Administrator , SME** **Category:** Business Consulting, Strategy and Digital...processing, and analysis of log data from various IT systems . This role is critical for monitoring system performance,… more
    CGI Technologies and Solutions, Inc. (09/30/25)
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  • Senior System Administrator

    ManTech (Chantilly, VA)
    …to join our team in **Chantilly, VA** . A qualified Senior Systems Administrator will support a secure Windows -based Information System and will assist and ... the installation, operation, and maintenance of all current and future Information Systems . Duties and responsibilities involve the support and administration of … more
    ManTech (09/01/25)
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  • Physical Security System Administrator 4

    M. C. Dean (Chantilly, VA)
    …Security System Administrator 4** to join our **Security and Electronic Systems (SES)** business Unit. As part of **(SES)** Strategic Business Unit you will ... for federal, local and commercial customers across high-growth markets. As a System Administrator for our Physical Security Systems , you will be responsible for… more
    M. C. Dean (08/30/25)
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  • System Administrator IV

    Arena Technical Resources, LLC (Reston, VA)
    …Reston, VA, US Job ID: ATR 17632 Job Description Job Title: Systems Administrator IV Location: Reston, VA Clearance Required: TS /SCI We are seeking a ... Maryland, and Virginia area. The candidate will be responsible for ensuring systems are fully operating at high availability, rapidly troubleshooting and resolving … more
    Arena Technical Resources, LLC (09/30/25)
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  • System Administrator

    Rite-Solutions Inc. (Dahlgren, VA)
    …| Virginia | Full Time Rite-Solutions, Inc. has a full-time opportunity for a Systems Administrator , on-site in Dahlgren, VA. You will provide daily support for ... that supports a cyber warfare enclave. The Program The Systems Administrator will be part of a...scheduled and unscheduled outages + Install, maintain, configure, troubleshoot, Windows and/or Linux servers + Red Hat Enterprise Linux… more
    Rite-Solutions Inc. (08/26/25)
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  • System Administrator

    Nightwing (Sterling, VA)
    …the intelligence community, defense, civil, and commercial markets. Job Title: System Administrator Location: Sterling, VA Clearance: TS /SCI Poly **This position ... is CONTINGENT upon contract award** The System Administrator (SysA) as part of the Platform Team delivers...customers in a timely manner. Required Skills: + Operating Systems : Extensive knowledge of Windows and Linux… more
    Nightwing (09/26/25)
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