• 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 ... installation, operation, and maintenance of all current and future Information Systems . Duties and responsibilities involve the support and administration of Windows… more
    ManTech (09/01/25)
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  • System Administrator

    System One (Springfield, VA)
    TS /SCI with the eligibility to obtain a CI Poly Contact: ###@altaits.com The Systems Administrator will work closely with both on-site and remote users to ... Job Title: System Administrator Location: Springfield VA Type: Contract To Hire...trouble calls, and provide TIER 2/3 support of production systems . + Systems administration of desktop and… more
    System One (09/16/25)
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  • Linux System Administrator -Senior Level

    Nightwing (Sterling, VA)
    …community, defense, civil, and commercial markets. Nightwing is seeking a highly motivated Systems Administrator to join a mature program in the Sterling VA ... location. The qualified Systems Administrator will support a very dynamic...range of experience supporting mission critical networks and computer systems . CLEARANCE REQUIREMENT: TS /SCI with POLY Responsibilities… more
    Nightwing (09/26/25)
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  • Linux System Administrator

    Nightwing (Arlington, VA)
    …seeking a Technical Engagement Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design, development, and deployment of ... Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to...- US Citizenship - Must have an active DoD Secret clearance, TS /SCI clearance is preferred. -… more
    Nightwing (08/28/25)
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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...Qualifications/Skills: + US Citizenship and Active or Interim DoD TS clearance with SCI eligibility + 2-5 years of… more
    Rite-Solutions Inc. (08/26/25)
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  • Senior System Administrator

    RTX Corporation (Springfield, VA)
    …tough, meaningful problems that create a safer, more secure world. Raytheon seeks a Systems Administrator to join a high-performing team at the heart of an ... as only US citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with Poly - Current At Raytheon, the foundation of everything we do… more
    RTX Corporation (09/26/25)
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  • Senior Linux - Windows System Administrator

    ICF (Reston, VA)
    …report onsite on a daily basis.** We are seeking a highly skilled, customer-facing Systems Administrator to support Linux and Windows environments for a critical ... Responsibilities:** + Administer and support both Linux and Windows operating systems , ensuring optimal system performance and adherence to security compliance… more
    ICF (10/02/25)
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  • Fidelis Administrator - Active TS

    ENS Solutions (Norfolk, VA)
    …Experience automating deployments and configuration management. + Experience as a network administrator or systems engineer. + Experience in using Active ... innovative solutions to enable secure and reliable operations of enterprise computer systems . Develop new concepts and processes and analyze root causes and resolve… more
    ENS Solutions (09/27/25)
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  • Computer System Administrator

    Northrop Grumman (Dulles, VA)
    …(adjudicated within the last 5 years); additionally, the selected candidate must be Top Secret eligible, and the required security clearance must be maintained ... will include but not be limited to the following: + Perform as primary Systems or Network Administrator for a classified government contract. + Communicate… more
    Northrop Grumman (08/13/25)
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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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