System Administrator (2026-0251)

McLean, VA
Full Time
Mid Level
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.

Acclaim Technical Services (ATS), founded in 2000, is a premier provider of tech-enabled solutions and operational services to a broad range of U.S. Federal agencies. As an Employee Stock Ownership Plan (ESOP) company—an uncommon advantage in our sector—we foster a culture of ownership, accountability, and shared success. This commitment to our people shows: ATS is consistently recognized as a top workplace in the DC area and continues to experience strong, strategic growth.

Salary Transparency: There are many factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employee owners value the flexibility at ATS that allows them to balance quality work and their personal lives. We offer competitive compensation, career growth, benefits and learning and development opportunities. Our broad mix of exceptional benefits options is designed to support and protect employees and their families. At ATS, you will be eligible to participate in a comprehensive benefits package such as healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. Learn more at Employee Resources

EQUAL EMPLOYMENT OPPORTUNITY (EEO) STATEMENT: ATS is committed to a program of equal employment opportunity without regard to race, color, ethnicity, national origin, ancestry, citizenship, sex, pregnancy, marital status, sexual orientation, age, religion/creed, hairstyles and hair textures, handicap/disability, genetic information/history, military/veteran status, or any other characteristic or condition protected by applicable law. We support the employment and advancement in employment of individuals with disabilities and of protected veterans, and we treat qualified individuals without discrimination on the basis of their physical or mental disability or veteran status.

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