• AeroVironment (Arlington, VA)
    …Type** Regular **Job Description** **Job Summary** The primary role of the ** System Administrator ** is to manage and support mission-critical IT infrastructure. ... Manage client/server/storage/network infrastructure. + Configure and manage RedHat Linux and Windows systems . + Support vulnerability management using Nessus. +… more
    DirectEmployers Association (12/19/25)
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  • Dentons US LLP (Washington, DC)
    … integrity and efficiency. + Manage external (IBM NS1) and internal DNS systems ( Active Directory Domain Services), ensuring accurate domain name record ... Senior Enterprise Messaging Administrator Chicago, IL, USSt. Louis, MO, USDenver, CO,...the latest applications, technologies, and their integration into existing systems , ensuring optimal performance and reliability. **Responsibilities:** + Lead… more
    DirectEmployers Association (12/13/25)
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  • Infinity Systems Engineering (Alexandria, VA)
    …Juniper switch configuration (Cisco experience is a plus) + Proficient in Linux and Windows system administration + Active CompTIA Security+ CE or equivalent ... with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven...secure, and troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux platforms… more
    DirectEmployers Association (11/25/25)
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  • AeroVironment (Herndon, VA)
    …Core 1 and Core 2 + Advanced Technical Expertise. + Deep understanding of Windows , macOS, mobile device operating systems , and working knowledge of Ubuntu/Linux ... role is responsible for resolving highly complex issues across multiple systems , mentoring junior staff, leading process improvement initiatives, and ensuring the… more
    DirectEmployers Association (01/06/26)
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  • Windows System Administrator

    V2X (Mclean, VA)
    …processes **Experience:** + 7+ years of relevant experience with Windows systems + Experience with complex system architectures and interconnected data ... Windows infrastructure as part of a collaborative systems team. Your focus will span operations, security, and...operating systems + Design interfaces to external systems and maintain thorough documentation on system more
    V2X (12/30/25)
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  • Systems Administrator II Generalist…

    V2X (Springfield, VA)
    …We are hiring a Senior Systems Administrator II Generalist - Windows Server - active TS/SCI clearance to support our government customer based in ... ability to obtain and maintain a Counterintelligence (CI) Polygraph. The Senior Systems Administrator II shall support the Information Technology (IT) Operations… more
    V2X (11/15/25)
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  • Senior Windows Systems

    Leidos (Arlington, VA)
    Windows Systems Administrator ). + Expert knowledge of Windows Active Directory infrastructure (GPOs, Group and User management). + Expert knowledge ... **Description** The Leidos Digital Modernization Sector is seeking a **_Senior Windows Systems Administrator_** in support of the Air Force National Capital… more
    Leidos (01/07/26)
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  • Windows System Administrator

    Link Solutions Inc (Adelphi, MD)
    …and appraised for CMMI ML3 for Services and Development. Link Solutions is seeking a Windows System Administrator (Senior-Level) to join our team at Adelphi, ... active DoD Top Secret Clearance + Non-remote (relocation incentive available) The Windows System Administrator (Senior-Level) will be responsible for the… more
    Link Solutions Inc (01/06/26)
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  • Windows System Administrator

    M. C. Dean (Falls Church, VA)
    …outcomes, improving lives, and changing the world for the better. We are seeking a ** System Administrator 1** to join our **Security and Electronic Systems ... of Experience with a High School Diploma **Required Progressive Experience:** + Requires system administrator experience in performing triage on system more
    M. C. Dean (12/23/25)
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  • Windows Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a skilled and motivated ** Windows Systems Administrator ** to join our team of top Information Technology and Analytic professionals in ... School Diploma and 7+ years of relevant experience with Windows systems + Experience with complex system architectures and interconnected data environments… more
    ManTech (12/03/25)
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  • G2 SharePoint Systems Administrator

    General Dynamics Information Technology (Fairfax, VA)
    …with a drive for innovation to GDIT. Our **SharePoint / Systems Administrator ** must have: + **Security Clearance Level:** Active Top Secret clearance. (A ... Yes **Job Description:** Transform technology into opportunity as a **SharePoint / Systems Administrator ** at GDIT. Shape what's next for mission-critical… more
    General Dynamics Information Technology (01/05/26)
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  • Fidelis Administrator - Active

    ENS Solutions (Washington, DC)
    …manage operating system and application software as necessary. Support Linux & Windows systems engineering efforts in system design and evaluation, ... Bachelor's degree and 3+ years of experience as a system administrator + Active DoD...or systems engineer. + Experience in using Active Directory to manage Windows policies. +… more
    ENS Solutions (12/12/25)
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  • System Administrator (Citrix)

    BAE Systems (Washington, DC)
    **Job Description** BAE Systems is seeking an experienced full-time on-site System Administrator to support our work as a prime contractor on a high-profile ... the customer and IT infrastructure teams. As an on-site System Administrator , you will: + Capture, document,... Server (2016/2019/2022) and Windows 11 operating systems . + Strong working knowledge of Active more
    BAE Systems (12/04/25)
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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...Sign On. + Enterprise Provisioning: Configure new Linux and Windows systems for customer use and ensuring… more
    General Dynamics Information Technology (01/05/26)
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  • System Administrator

    BAE Systems (Washington, DC)
    **Job Description** BAE Systems is seeking an on-site ** System Administrator ** to support our work as a prime contractor on a high-profile US Navy weapon ... the customer s digital engineering environment as the primary System Administrator for a classified network. In...time + Experience managing and troubleshooting servers (RHEL and Windows ) + Experience with Active Directory Account… more
    BAE Systems (01/15/26)
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  • After Hours System Administrator

    BAE Systems (Washington, DC)
    **Job Description** BAE Systems is seeking an After Hours* System Administrator to support our work as a prime contractor on a high-profile US Navy weapon ... to effectively troubleshoot issues with Windows Server, Active Directory, and other IT systems +...based on position level and/or job specifics. **After Hours System Administrator ** **119978BR** EEO Career Site Equal… more
    BAE Systems (01/09/26)
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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 ... eligibility Duties and Responsibilities: Leads a team of system administrators responsible for enterprise IT systems . * Manages escalated incidents, patch… more
    System One (12/26/25)
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  • System Administrator

    Assertive Professionals (Chantilly, VA)
    System Administrator About the Organization Established in 2015,AssertiveProfessionals(AP), is anEconomically Disadvantaged Woman Owned Small Business ... 2012 R2, Windows Server 2016 + Designing and operating Microsoft Active Directory in a secure and distributed IT environment supporting clients and servers… more
    Assertive Professionals (01/07/26)
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  • Network/ Systems Administrator 2…

    GovCIO (Washington, DC)
    …the Microsoft Server platform and its components including Active Directory, Windows Server 2016, 2019 and 2022 Operating Systems , failover clustering, ... /Yr. Submit a referral to this job (https://careers-govcio.icims.com/jobs/6592/network- systems - administrator -2-%28desktop-and- system -support%29/job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) **Location** _US-DC-Washington,… more
    GovCIO (12/05/25)
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  • Systems Administrator

    BAE Systems (Sterling, VA)
    …Certified Professional (VCP) + RedHat Certified System Administrator /Engineer (RHCSA/RHCE) + Microsoft Certified: Windows Server Administration/Engineer ... BAE Systems is looking for a Senior Systems Administrator to provide comprehensive support to...maintenance, from daily troubleshooting needs to the verification of system performance. Responsibilities include: Systems Administration &… more
    BAE Systems (12/09/25)
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