• Sr. System Administrator

    Arena Technical Resources, LLC (Reston, VA)
    Sr. System Administrator Location: Reston, VA, US Job ID: ATR 17710 Job Description Job Title: Sr. System Administrator Location: Reston, VA - Onsite, ... SCIF Environment Eligibility: TS /SCI with CI Polygraph Job Description: The job duties of the Sr. System Administrator are as follows: * Plans, designs, and… more
    Arena Technical Resources, LLC (01/01/26)
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  • Lead Windows Systems Administrator

    General Dynamics Information Technology (Chantilly, VA)
    …PRX25822 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... of related experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead Windows… more
    General Dynamics Information Technology (12/29/25)
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  • Systems Administrator

    William C Brown Inc (Springfield, VA)
    Systems Administrator EOE Statement We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without ... protected by law. Description WCBinc is looking for a Systems Administrator to join our team to...Provide support for implementation, troubleshooting and maintenance of IT systems and management of system infrastructure and… more
    William C Brown Inc (10/14/25)
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  • Network Infrastructure/ System

    CACI International (Mclean, VA)
    Network Infrastructure/ System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS /SCI with ... * **The Opportunity:** CACI is looking for a Network Infrastructure/ System Administrator to join the Luke Team!...with industry best practices + Knowledge of different operating systems (Microsoft, Unix, Linux , etc.) + Attention… more
    CACI International (12/17/25)
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  • Senior System Administrator (2nd…

    RTX Corporation (Springfield, VA)
    …eligible for a security clearance. + Security+ DoD 8570 certification or higher. + System administration experience across Linux systems . + Experience in the ... create a safer, more secure world. Raytheon seeks a Systems Administrator to join a high-performing team...its national security strategy. This is for an on-site system administrator sustaining and maintaining a VM-based… more
    RTX Corporation (12/14/25)
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  • System Administrator

    Nightwing (Sterling, VA)
    …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...customers in a timely manner. Required Skills: + Operating Systems : Extensive knowledge of Windows and Linux more
    Nightwing (12/26/25)
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  • System Administrator

    TekSynap (Arlington, VA)
    …II (Security+ CE minimum). + Active Secret clearance. **COMPETENCIES** + System provisioning & administration ( Linux /Windows) + CNCF ecosystem tools & ... **WORK AUTHORIZATION/SECURITY CLEARANCE** USCitizenship **Clearance requir** **eme** **nt** :Active ** Secret clearance** ( Top Secret /SAP preferred). **OTHER… more
    TekSynap (12/31/25)
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  • SIGINT Systems Administrator (Low…

    CACI International (Hampton, VA)
    SIGINT Systems Administrator (Low Band Journeyman) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Employee Type: ... Travel: * * * CACI is seeking a SIGINT Systems Administrator to join the CACI team...procedures to ensure appropriate function of hardware, software, or system functional specifications. Additionally, you will analyze, troubleshoot, and… more
    CACI International (12/15/25)
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  • Systems Administrator

    CACI International (Hampton, VA)
    Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage ... * * **The Opportunity:** CACI is seeking a cleared Systems Administrator in Hampton, VA. This is...Respond and resolve service outages, technical queries and other system related issues. + Conduct systems analysis… more
    CACI International (12/18/25)
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  • Information System Security Engineer…

    Amentum (Warrenton, VA)
    …program is to support, operate, and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN- TS ES) which is a ... intimate knowledge of security design best practices for information systems . throughout the system development life cycle...at multiple classifications levels. **Requirements:** * Must have active Top - Secret clearance with SCI or TS more
    Amentum (12/05/25)
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