• PKI Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …5 + years of related experience **US Citizenship Required:** Yes **Job Description:** PKI Systems Administrator Advance how our customers operate while ... you advance your career. Join GDIT as a PKI Systems Administrator and you will build an impactful career in enterprise IT, collaborating with people who are… more
    General Dynamics Information Technology (12/17/25)
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  • Systems Administrator

    BAE Systems (Sterling, VA)
    …and protect our freedom. BAE Systems is looking for a Senior Systems Administrator to provide comprehensive support to all aspects of system maintenance, ... incentives may be available based on position level and/or job specifics. ** Systems Administrator ** **117073BR** EEO Career Site Equal Opportunity Employer.… more
    BAE Systems (12/09/25)
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  • Senior Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …+ years of related experience **US Citizenship Required:** Yes **Job Description:** Senior Systems Administrator Own your opportunity to join our team, bringing ... becomes better. GDIT has an immediate opening for a Systems Administrator to fill a Core Services...where authentication, authorization, and accounting actives are controlled by Active Directory with PKI certificates and Single… more
    General Dynamics Information Technology (01/05/26)
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  • Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated and skilled **Senior Systems Administrator ** to join our sustainment team in **Chantilly, VA.** In this role, you will support a ... systems and group policy configuration **Clearance Requirements:** + Active TS/SCI with Polygraph is required for this position **Physical Requirements:**… more
    ManTech (12/13/25)
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  • Systems Administrator (Hybrid…

    Serco (Washington Navy Yard, DC)
    …& Qualifications** **Position Description & Qualifications** Serco is seeking a skilled Systems Administrator to support the Navy-owned PMS-ES Integrated Data ... high availability. + Administering user accounts, group policies, and permissions in Active Directory. + Supporting PKI integration and CAC/ECA certificate… more
    Serco (01/15/26)
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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 ... with Windows 10 and 11 environments and Windows Server 2016/2019, to include Active Directory, Domain Controllers, DNS, GPO's, PKI , DHCP, VMware v8, Backup… more
    ManTech (12/19/25)
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  • System Administrator - Linux - TS/SCI FSP…

    The Metamorphosis Group (Chantilly, VA)
    System Administrator - LINUX - TS/SCI FSP REQUIRED Chantilly, VA Apply Now Job Description The Metamorphosis Group, Inc, TMG, has an immediate opening for a Linux ... System Administrator , who shall be responsible for maintaining, scheduling, executing...continuous system monitoring. MUST BE US CITIZEN MUST HAVE ACTIVE TS/SCI with FSP US Veterans Preferred **ABSOLUTELY NO… more
    The Metamorphosis Group (12/10/25)
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  • System Administrator (Linux) - US…

    CGI Technologies and Solutions, Inc. (Fairfax, VA)
    …with Active Directory and LDAP. * Cryptography: Knowledge of PKI Infrastructure and cryptographic certificates. * Patch Management: Experience with patch ... **System Administrator (Linux) - US Citizenship Required** **Category:** Cyber...Skills: Strong ability to troubleshoot Windows and Linux operating systems . * Security and Compliance: Familiarity with STIGs and… more
    CGI Technologies and Solutions, Inc. (12/11/25)
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  • Senior System Administrator (2nd Shift)

    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 ... Type:** Onsite **U.S. Citizen, US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior… more
    RTX Corporation (01/07/26)
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  • Cybersecurity System Administrator - DMV

    M. C. Dean (District Of Columbia, DC)
    Overview MC Dean is seeking a highly skilled **Cybersecurity System Administrator ** to support a secure operational technology environment by integrating advanced ... individual with both hands-on technical expertise in managing modern enterprise IT systems and a deep understanding of federal cybersecurity frameworks and risk… more
    M. C. Dean (11/26/25)
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  • System Administrator Lead

    System One (Mclean, VA)
    Job Title: System Administrator Lead Location: Arlington, Virginia Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Top Secret w/ SCI ... Leads a team of system administrators responsible for enterprise IT systems . * Manages escalated incidents, patch management, and configuration oversight. *… more
    System One (12/26/25)
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  • Senior Integrator- Windows Server Engineering

    SAIC (Washington, DC)
    **Description** The Senior Integrator will provide systems integration and systems administration support for Operations and Maintenance (O&M) and various ... (COE). The Windows Server Team is responsible for Windows servers, Active Directory, remote desktop services, OS vulnerability remediation, Windows Server and… more
    SAIC (01/06/26)
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  • Senior Directory Services Engineer

    Ryder System (Washington, DC)
    …multiple environments and entities. The role requires deep knowledge of Active Directory and other directory platforms, strong problem-solving skills, and proven ... engineering, design, and lifecycle management of directory services platforms including Active Directory, Azure Active Directory, and other cloud-based directory… more
    Ryder System (12/01/25)
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  • Sr. Integrator - Windows Server

    System One (Washington, DC)
    …ONLY Open/Additional Info Job Summary : The Senior Integrator will provide systems integration and systems administration support for Operations and Maintenance ... (COE). The Windows Server Team is responsible for Windows servers, Active Directory, remote desktop services, OS vulnerability remediation, Windows Server and… more
    System One (01/14/26)
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  • Linux Sys Admin - TS/SCI CI Poly

    Insight Global (Springfield, VA)
    Job Description Seeking a Systems Administrator to join a high-performing team at the heart of an important US government function which helps the nation meet ... its national security strategy. This is for an on-site system administrator sustaining and maintaining a VM-based data system supporting a high visibility system… more
    Insight Global (01/07/26)
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