System Administrator (2026-0251)

Acclaim Technical Services

McLean, VA, United States Full-time yesterday
Workplace
On-site
Location
McLean, VA, United States
Who can apply
Based in the United States: you usually need the right to work there

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About the role

Acclaim Technical Services, founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company supporting a wide range of U.S. Federal agencies. We are an Employee Stock Ownership Plan (ESOP) company, which is uncommon within our business sector. We see this as a significant strength, and it shows: ATS is consistently ranked as a top workplace among DC area firms and continues to grow.

ATS is seeking System Administrator to support a client’s operational requirements in a challenging, dynamic setting located in the Washington Metropolitan Area. The positions require an active TS/SCI with Polygraph security clearance.

What you’ll be doing End-user and account support * Serve as the customer support IT point of contact: set up user accounts, reset passwords, and resolve day-to-day IT issues. * Apply system and security patches and run security and compliance scans. * Support day-to-day customer needs, including technical exchange meetings (TEMs) and digitizing material such as scanning hardcopy documents.

Data transfers * Act as the primary point of contact for moving data on and off customer systems and networks, including standalone machines and laptops.

Hardware and standalone systems * Assist with hardware recapitalization (tech refresh), setup, and replacement at the customer site, including monitors, workstations, and network switches. * Provide operations and maintenance (O&M) for standalone machines and laptops, including patching, required scans, and setup.

Network and system troubleshooting * Provide first-line support for network and system troubleshooting. * Act as the on-site point of contact coordinating customer and team responses during troubleshooting, outages, and upgrades. * Use approved notification systems (ticketing, email, etc.) to notify the customer and team about systems in or related to the supported programs. * Write incident reports and follow up during and after incidents, events, and responses.

Reporting and coordination * Coordinate any tasking outside this scope of work with Customer. * Perform additional IT support tasks as required.

Required skills These are inferred from the scope of work; adjust years and clearance to match the contract. * 3+ years of hands-on IT help desk, desktop support, or systems administration experience. * Experience creating and managing user accounts and resetting passwords (e.g., Active Directory). * Experience applying OS and security patches on Windows workstations and laptops. * Experience running security and compliance scans and remediating findings. * Experience installing, configuring, and replacing workstations, monitors, and network switches. * Working knowledge of network troubleshooting (TCP/IP, DNS, DHCP, switching). * Experience using a ticketing system to log, track, and communicate issues. * Strong written communication for weekly status reports and incident reports. * Ability to work on site during 0700–1600 Monday through Friday and to provide on-call support. * Ability to lift and move IT equipment such as workstations and monitors.

Desired skills * CompTIA Security+ or equivalent DoD 8140/8570 IAT Level II certification. * CompTIA A+ and/or Network+. * Experience supporting government or defense customers, including classified or isolated networks. * Familiarity with secure data transfer procedures between networks and standalone systems. * Experience with compliance and vulnerability scanning tools such as ACAS/Nessus or SCAP/STIG Viewer. * Experience with patch management tools such as WSUS, SCCM/MECM, or Intune. * Experience with hardware tech refresh projects and asset inventory. * Experience operating scanners and document digitization workflows. * Experience supporting meetings and A/V setup for technical exchange meetings. * Comfort working as a subcontractor alongside a prime contractor and the end customer. * Active security clearance, if required by the contract.

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