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The One 23 Group

Windows Systems Administrator

Arlington, VA

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hirly's read of this role

Role family
Customer support
Seniority
Mid level
Country
US
Work mode
On-site / unstated
First seen by hirly
7 Oct 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

Description

We are seeking an experienced Windows Systems Administrator to provide systems administration support for contract-owned and operated systems within a classified enterprise environment. This role supports Tier 2 and Tier 3 troubleshooting, operating system lifecycle maintenance, and change management activities. The ideal candidate is a strong Windows administrator with experience supporting secure, enterprise-level environments.

Requirements

  • Provide Tier 3 support for in-house developed systems and site-unique enhancements.
  • Support maintenance of current and future versions of supported IT systems.
  • Maintain server operating systems at required versions.
  • Maintain COTS, GOTS, and Open-Source software at required versions.
  • Perform installation, configuration, administration, and troubleshooting of supported systems.
  • Support incident, change, and configuration management processes in accordance with lifecycle support requirements.
  • Administer Active Directory user and group management functions.
  • Support VMware virtual machine administration and Virtual Desktop environments.
  • Provide support for DNS, DHCP, backup and restore operations, SAN storage fundamentals, and desktop imaging tools.
  • Assist with PowerShell scripting and automation efforts as needed.

REQUIREMENTS

  • Minimum active Top-Secret Clearance with SCI eligibility; AND,
  • DoD 8140/8570 Information Assurance Technical Level II (IAT-II) certification; AND,
  • 10 years of relevant IT systems engineering or systems administration experience supporting enterprise Windows environments.

ADDITIONAL INFORMATION

  • Position located on-site
  • DAY shift position

PREFERRED:

  • Experience supporting systems within classified DoD enterprise environments.
  • Experience with Virtual Desktop Infrastructure (VDI).
  • PowerShell scripting and automation experience

ABOUT US

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.?

Our expertise spans Enterprise IT, Mission IT and Cyber. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity.

Original posting on The One 23 Group's site ↗

Listed on hirly, a job board. hirly is not the employer: The One 23 Group is hiring for this role.

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