• Linux Administrator - ACAS

    CACI International (Springfield, VA)
    Linux Administrator - ACAS Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular ... worldwide to support the NGA mission. In this role, we're seeking a ** Linux Administrator - ACAS ** who could potentially be located in either **Springfield,… more
    CACI International (08/11/25)
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  • Senior Tenable Nessus Administrator

    CACI International (Chantilly, VA)
    Senior Tenable Nessus Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular ... US * * * **The Opportunity:** CACI is looking for a Senior Tenable Administrator to support our DoD customer to implement an enterprise IT service delivery model… more
    CACI International (06/24/25)
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  • Lead Linux Admin

    ASM Research, An Accenture Federal Services Company (Washington, DC)
    administrator capacity. Considered a technical specialist in a variety of IT administrator disciplines. * Manage a team of Linux and Windows Administrators ... with integration of DoD STIGs and other recommended security standards. * Integrate Linux systems with other enterprise tooling (eg, ACAS , Splunk, SevOne, Backup… more
    ASM Research, An Accenture Federal Services Company (07/25/25)
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  • Systems Administrator , Senior

    BOOZ, ALLEN & HAMILTON, INC. (Fort Meade, MD)
    Systems Administrator , Senior The Opportunity: Are you looking for an opportunity to use your technical expertise in support of cyberspace operations? As a Systems ... Administrator , you'll have the chance to build your expertise...mentor and supervise team members. You'll support Windows and Linux systems engineering efforts in system design and evaluation,… more
    BOOZ, ALLEN & HAMILTON, INC. (09/09/25)
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  • Senior Systems Administrator II Generalist…

    V2X (Springfield, VA)
    …respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - active TS/SCI clearance to support our government ... obtain and maintain a Counterintelligence (CI) Polygraph. The Senior Systems Administrator II supports the information technology (IT) Operations and Maintenance… more
    V2X (08/07/25)
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  • Senior Trellix/Microsoft Defender…

    Leidos (Fort Belvoir, VA)
    …and key management + STIG compliance, SCC and STIG Viewer experience, and ACAS expertise. + Expert with Microsoft Windows, Linux , and system virtualization ... **Description** Leidos is seeking a skilled **Senior Trellix/Microsoft Defender Administrator in Fort Belvoir, VA** to join the I3TS team supporting DTRA. The I3TS… more
    Leidos (08/30/25)
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  • Senior System Integrator Engineer (TS/SCI)

    Vexterra Group (Bethesda, MD)
    …and O&M team members on the following key tasks: DUTIES * Perform Linux builds, installs, configuration, administration, and troubleshooting of both Linux and ... and system patching, performance monitoring, etc. * Provide O/S hardening (STIG, OpenSCAP, ACAS ) and system patching * Develop server builds for virtual and physical… more
    Vexterra Group (07/15/25)
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  • Forescout Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Riverdale, MD)
    …Nice If You Have: + Experience operating and maintaining Micro sof t Windows and Linux servers + Experience as a network administrator or systems engineer + ... in support of client information operations? As a system administrator , you'll have the chance to build your skills...network devices. You'll configure and manage Windows, UNIX, and Linux operating systems and install and load the operating… more
    BOOZ, ALLEN & HAMILTON, INC. (08/17/25)
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  • Splunk Security Engineer

    Leidos (Suitland, MD)
    …Operational products such as Active Directory, DNS, FWs (packet flows), Email, ACAS , Trellix/Tanium, Splunk, STIGs, Windows/ Linux and the standard services ... and Nessus, VMWare vCenter/ESXi, ServiceNow, Azure and AWS, NetApp, Windows and Linux . Connectors may use APIs, tokens, or service accounts, so understanding these… more
    Leidos (07/12/25)
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