• Senior Systems Administrator

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

    RTX Corporation (Annapolis Junction, MD)
    …some unclassified work will also be required. We're looking for an experienced Systems Administrator to join our team supporting critical operations in both ... Raytheon currently has an opening for a temporary System Administrator to perform onsite in our Annapolis Junction, Maryland...deleting user accounts and groups as well as integrating Linux systems into an Active Directory environment… more
    RTX Corporation (11/19/25)
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  • Fidelis Administrator - Active TS/SCI…

    ENS Solutions (Reston, VA)
    …Install, configure and manage operating system and application software as necessary. Support Linux & Windows systems engineering efforts in system design and ... the appliance via SSH or Console Port + Experience operating and maintaining Linux servers, including operating systems and applications, patching, and other… more
    ENS Solutions (12/27/25)
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  • Senior Windows Systems Administrator

    ISYS Technologies (Eglin AFB, FL)
    …with external Information Assurance offices. + General understanding of multiple operating systems to include Windows Server and Linux Server variants. + ... our government customers. I2X Technologies is seeking a Senior Systems Administratorto support ongoing activities for a customer at...the ability to sit for and pass a CO Polygraph . + Install, configure, and support an organization's… more
    ISYS Technologies (01/06/26)
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  • Systems Network Administrator

    Leidos (Laurel, MD)
    **Description** **Leidos** has a new and exciting opportunity for a ** Systems /Network Administrator ** in our **National Security Sector's (NSS) Cyber & Analytics ... us and make a difference in National Security!** **Job Summary:** Systems /Network administrator will provide support for implementation, troubleshooting and… more
    Leidos (12/20/25)
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  • Systems Administrator

    Northrop Grumman (Aurora, CO)
    …implementation experience + Experience with NetApp storage + Perform as consulting Systems Administrator and subject matter expert for classified government ... are not only part of history, they're making history. Northrop Grumman Space Systems (NGSP) seeks to fill a **System Administrator ** supporting Integrated… more
    Northrop Grumman (11/27/25)
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  • Systems Administrator

    SAIC (Washington, DC)
    …limited to: + Manage and maintain the infrastructure that powers networks and operating systems such as UNIX, Linux , and Windows. + Install and configure ... **Description** SAIC, a leading provider of systems engineering & integration, systems development...and coordinate system changes. **Qualifications** + Active TS/SCI with Polygraph . + Experience with IT Service Management (ITSM). +… more
    SAIC (12/06/25)
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  • Systems Administrator

    Arena Technical Resources, LLC (Springfield, VA)
    Systems Administrator Location: Springfield, VA, US Job ID: ATR 17769 Job Description Job Title: Systems Administrator Location: Springfield, VA ... TS/SCI clearance and be willing to obtain a CI Polygraph Job Description: Night Shift Schedule: 530 pm to...assess scope and impact. - Correlate events across multiple systems to recognize patterns, performance anomalies, and early indicators… more
    Arena Technical Resources, LLC (01/12/26)
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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 ... + Lead and supervise a team of system administrators (Windows/ Linux /VMWare) and IT support staff. + Design, implement, and...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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  • Linux Engineer

    Arena Technical Resources, LLC (Chantilly, VA)
    … required The Systems Engineering team is seeking a driven Senior Linux /UNIX Systems Administrator that is highly technical and mission focused. ... SUCCEED Basic Qualifications: - Ten (10) years' experience as aLinux/UNIX Systems Administrator supporting complex, multi-site enterprise-scale environments -… more
    Arena Technical Resources, LLC (11/29/25)
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