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Chantilly, Virginia

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Today

Description RSS is searching for an experienced and skilled Senior Windows System Administrator to join our IT team. As a key member of our infrastructure support team, you will be responsible for designing, implementing, and maintaining our Windows-based systems, networks, and applications. This is a great opportunity for a motivated and detail-oriented individual who is passionate about delivering exceptional technical support. If you enjoy working with new technologies, enterprise-leading e

Full-time

USD 180,000.00 per year

Windows System Administrator

Falls Church, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Critical Systems, Disaster Recovery (DR), Information Technology (IT) Systems, Microsoft Windows, System Administration Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: We are seeking a Windows System Administr

Full-time

USD 89,250.00 - 120,750.00 per year

Windows System Administrator (TS/SCI)

Fort Belvoir, Virginia

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Today

Koniag IT Solutions, a Koniag Government Services company, is seeking an experienced Windows Systems Administrator with an active TS/SCI Clearance to support and maintain secure, mission-critical IT environments for our government client. This position is for a Future New Business Opportunity. We offer competitive compensation and an extraordinary benefits package including health, dental, and vision insurance, 401K with company matching, flexible spending accounts, paid holidays, three weeks p

Full-time

Windows System Administrator

Indian Head, Maryland

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Today

Job Number: R0241372 Windows System Administrator The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an impact? You understand your customer's environment and how to develop the right systems for their mission. Your ability to translate real-world needs into technical specifications makes you an integral part of delivering a customer-focused engineering solution. We are seeking a skilled Windows System Administrator to join ou

Full-time

USD 62,000.00 - 141,000.00 per year

Senior System Administrator - TS/SCI w/Polygraph

Reston, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Backup and Recovery, Computer Servers, Information Technology (IT) Systems, Linux, Wide Area Network (WAN) Certifications: CompTIA Security+ CE | CompTIA - CompTIA Experience: 9 + years of related experience ship Required: Yes Job Desc

Full-time

USD 142,792.00 - 184,000.00 per year

System Administrator (Experienced, Senior or Lead)

Herndon, Virginia

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Today

System Administrator (Experienced, Senior or Lead) Company: The Boeing Company The Boeing Defense, Space & Security (BDS) organization, Intelligence Systems portfolio, is seeking a System Administrator (Experienced, Senior or Lead) to join our Mission Operations team in Herndon, VA. Our team focuses on delivering complex solutions in some of the most challenging environments on Earth. We provide support for our Mission Operations Portfolio area which design, build, test, deploy, operate, and m

Full-time

USD 102,850.00 - 139,150.00 per year

Systems Administrator, Lead (Linux/Windows)

Arlington, Virginia

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Today

Overview AMERICAN SYSTEMS, a 100% employee-owned federal contracting company, is seeking a Lead Systems Administrator with strong Linux CLI and Windows administration experience to support a Special Access Program in Arlington, VA. This role focuses on owning and optimizing enterprise Linux & Windows infrastructure across multiple datacenters, partnering with cybersecurity and engineering teams, and providing Tier support for systems that cannot fail. Role includes a $5,000 sign-on bonus in

Full-time

USD 150,000.00 per year

Lead Windows Administrator

Washington, District of Columbia

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Today

Koniag IT Systems, LLC, a Koniag Government Services company, is seeking a Lead Windows Administrator to support KITS and our government customer in Washington, DC. This opportunity will require the candidate to work onsite in downtown Washington, DC, five (5) days per week, Monday through Friday. We offer competitive compensation and an extraordinary benefits package including health, dental, and vision insurance, 401K with company matching, flexible spending accounts, paid holidays, three week

Full-time

USD 100,000.00 per year

Microsoft System Administrator- Senior / Junior(Top Secret with agreement to obtain CI Poly)

Fort Belvoir, Virginia

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Today

This job requires active TS/SCI clearance with a CI Polygraph. Please apply only if you have an active TS/SCI clearance with a CI Polygraph. Microsoft System Administrator (Senior / Junior) Position / LCAT: Microsoft System Administrator Level: Senior and Junior Lead Designation: N/A Location: Fort Belvoir, VA Role Summary Supports the identification and resolution of automation and information technology hardware and software issues to maintain at least a 99% system availability rate. Senior

Full-time

System Administrator, Sr Principal

Fort Belvoir, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Critical Systems, Information Technology (IT) Systems, System Administration, Technical Support Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: A Sr Principal Systems Administrator is a senior-level IT pro

Full-time

USD 148,750.00 - 201,250.00 per year

Microsoft System Administrator - Senior (TS/SCI Required)

Fort Belvoir, Virginia

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Today

Location: Ft. Belvoir, VA Clearance Required: TS/SCI minimum () Employment Type: Full-Time About Praescient Analytics: Praescient Analytics is a leader in delivering advanced analytic, data engineering, and technology integration solutions in support of the Department of Defense (DoD), Intelligence Community, and federal law enforcement. Our mission is to empower analysts and decision-makers through data-driven insights, enabling faster and more effective mission outcomes. Position Overview: P

Full-time

SCCM/Windows Systems Administrator

Bethesda, Maryland

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Today

Leidos Digital Modernization is seeking a skilled SCCM/Windows Systems Administrator to support the Defense Intelligence Agency (DIA) National Digital Exploitation & OSINT Center (NDOC) IT Operations and Maintenance (O&M) program. This is a mission-critical role providing engineering and operational support to Windows server environments across connected and disconnected networks. The Windows Engineer will design, maintain, and secure Windows platforms while ensuring patch deployment and lifecyc

Full-time

USD 73,450.00 - 132,775.00 per year

Windows Desktop Administrator (TS/SCI)

Fort Belvoir, Virginia

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Today

Koniag IT Solutions, a Koniag Government Services company, is seeking an experienced Senior Windows Desktop Administrator with an active TS/SCI clearance to provide advanced technical support, troubleshooting, and systems administration across enterprise Windows environments. This position is for a Future New Business Opportunity. We offer competitive compensation and an extraordinary benefits package including health, dental, and vision insurance, 401K with company matching, flexible spending a

Full-time

System Operations/Administrator (Multiple Levels)

Chantilly, Virginia

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Today

Responsibilities Noblis ESI is seeking a System Operations/Administrator with a background in managing and maintaining desktop computing environments to support our customer in Chantilly, VA. Job Responsibilities Install, configure, and maintain desktop systems, laptops, and peripheral devices. Provide technical support and troubleshooting assistance to end-users for hardware, software, and network-related issues. Monitor system performance and security, ensuring compliance with organizational

Full-time

USD 120,700.00 - 188,725.00 per year

Senior System Administrator

Silver Spring, Maryland

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Today

Analytica is seeking a seasoned and adaptable Senior System Administrator to join our infrastructure team in supporting an innovative federal mission. In this role, you will provide high-level technical leadership, engineering expertise, and strategic vision to optimize, manage, and secure our enterprise hardware, software, and network ecosystems. Analytica has been recognized by Inc. Magazine as a fastest-growing private US small business. We work with U.S. government customers in health, civi

Full-time

System Administrator

Fairfax, Virginia

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Today

Key Responsibilities Administer, maintain, and troubleshoot enterprise Windows and Linux server environments.Manage and support F5 load balancers, including configuration, monitoring, and performance optimization.Support enterprise infrastructure operations, including system deployment, patching, monitoring, and maintenance.Work with networking teams to support load balancing, routing, and network infrastructure integration.Maintain system security and compliance with DoD and federal security st

Full-time

Mac System Administrator - Atlanta, GA (Onsite)

Washington, District of Columbia

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Today

Job Title: Windows & Mac System Administrator Location: Virginia (VA), Washington, DC, Maryland (DMV Area) Onsite Key ResponsibilitiesAdminister and support Windows Server, Windows 10/11, and macOS environments.Manage Active Directory, Group Policy, Azure AD, and user account administration.Deploy, configure, and maintain Windows and Mac devices across the organization.Manage endpoint management tools such as Microsoft Intune, Jamf, SCCM/MECM, or similar platforms.Monitor system performance, tro

Easy Apply

Contract, Third Party

Depends on Experience

Senior Server Windows Engineer

Washington, District of Columbia

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Today

Job ID: 2613807 Location: Washington, DC, US Date Posted: 2026-06-17 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: ORA_ON_SITE Description The Senior Server Windows Engineer will provide systems administration and migration support for over 2000 windows operating on-premises and cloud tenants/environments with

Full-time

USD 80,001.00 - 120,000.00 per year

Sr Systems Administrator

Reston, Virginia

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Today

Be Challenged and Make a Difference In a world of technology, people make the difference. We believe if we invest in great people, then great things will happen. At AnaVation, we provide unmatched value to our customers and employees through innovative solutions and an engaging culture. Description of Task to be Performed: AnaVation is seeking a Sr Systems Administrator to join our team and support our mission critical customer in Reston, VA. As a Sr Systems Administrator you will: Plan, desig

Full-time

IT System Administrator

Washington, District of Columbia

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Today

Overview Edgewater Federal Solutions is currently seeking a detail-oriented IT System Administrator with Cyber Security experience to support our federal customer in the Washington DC area. The candidate will work with the government customer to support the review and implementations of system security configurations, policies, and procedures for the federal customer's IT Systems. This is a hybrid role with 1 day a week on site or as the customer requires. *Due to the nature of the work and co

Full-time

USD 80,000.00 - 100,000.00 per year

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