• Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    …Appropriate ND 50-05/DoD 8570.01-M certification. + Experience with Windows and Linux operating systems . + Experience providing help-desk end-user support for ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior ** **IT Systems Administrator** to join...and ability to perform software installations and upgrades to operating systems and layered software packages. +… more
    ManTech (07/22/25)
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  • Senior Systems Engineer (Deployment)

    Red River (King George, VA)
    Red River Technology is actively seeking a dedicated and highly skilled Senior Systems Engineer to join our team in supporting a mission-critical program for the ... operational readiness across the entire US Naval Fleet. The Senior Systems Engineer will work with the...the program team to install, configure, test, and maintain operating systems applications across various DoD client… more
    Red River (05/30/25)
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  • Senior Network/ Systems

    GovCIO (Richmond, VA)
    …fully remote position. **Responsibilities** Establishes and maintains smooth operation of computer systems (to include operating systems , software and ... **Overview** GovCIO is currently hiring for a Senior Network/ Systems Administrator with an active Secret clearance. This position will be located in Sterling, VA… more
    GovCIO (07/10/25)
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  • Systems Engineer - Integration - active…

    V2X (Springfield, VA)
    …(7) or more years of proven hands-on experience engineering, implementing and operating enterprise-level operating systems , applications and technologies ... information system. + Implementing, configuring and maintaining Windows and Linux operating systems , services, devices, and applications in production enterprise… more
    V2X (06/24/25)
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  • Senior Systems Administrator (Unix/…

    First Division Consulting (Dahlgren, VA)
    …and configuration of hardware, operational systems , and COTS software. + Operating systems in different environments and performance tuning. + Expertise in ... contract award** Position Overview: First Division Consulting is seeking a Senior Unix/Linux Systems Administrator to support a Department of the Navy (DoN)… more
    First Division Consulting (06/19/25)
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  • Senior Mainframe Systems Programmer…

    Fiserv (Richmond, VA)
    …and performance objectives, as required by customers and management are maintained for operating systems and for system software components + Provide informal ... on a global scale, come make a difference at Fiserv. **Job Title** Senior Mainframe Systems Programmer (z/OS) **About your role:** The Senior Mainframe … more
    Fiserv (07/06/25)
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  • Senior Systems Software Engineer…

    UIC Government Services and the Bowhead Family of Companies (Quantico, VA)
    **Overview** SENIOR SYSTEMS SOFTWARE ENGINEER | TIER III (MIELS): Bowhead is seeking Senior Systems Software Engineers to support a customer in Stafford, ... troubleshooting, and updates. + Ensure proper software integration with operating systems , databases, and other enterprise applications. **Qualifications**… more
    UIC Government Services and the Bowhead Family of Companies (06/05/25)
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  • Systems Administrator

    ManTech (Herndon, VA)
    …critical or high-security environments + They possess advanced knowledge of operating systems , server hardware, virtualization platforms, network infrastructure, ... **ManTech** is seeking a motivated, career and customer-oriented ** Systems Administrator III ( Senior )** to join...managing and maintaining complex IT infrastructure. Deep understanding of operating systems (eg, Windows Server, Linux) and… more
    ManTech (07/22/25)
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  • Principal Network Systems Engineer

    Saliense Consulting (Arlington, VA)
    …expert technical support, administration, and engineering on all Microsoft Windows Operating Systems . + Monitors, performance tunes, troubleshoots and resolves ... blade servers, switches, routers, bridges, firewalls) + Software (multiple operating systems , virtualization software, virtual desktop infrastructure, SCCM/MECM,… more
    Saliense Consulting (07/07/25)
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  • Systems Administrator ( Systems

    Huntington Ingalls Industries (Fairfax, VA)
    …seamless operation for the team. * Install, configure, and maintain operating systems (Windows, Linux)-apply patches/updates and implement security controls. ... Range: $76,513.00 - $115,000.00 Security Clearance: Secret Level of Experience: Senior This opportunity resides with Global Security (GS). Mission Technologies'… more
    Huntington Ingalls Industries (06/28/25)
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