Windows Systems Administrator Team Lead

The One 23 Group
Herndon, VA

Job Description

Job Description

Description:

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.

The Position
We are seeking a Windows Systems Administrator – Team Lead to provide systems engineering and administration support for mission-critical, contract-owned systems operating in a classified DoD environment. This role delivers Tier 2 and Tier 3 support, oversees lifecycle maintenance of Windows-based infrastructure, and leads a team of system administrators in daily operations and engineering activities.

This is a hands-on technical leadership role supporting secure, enterprise-level Windows server and network environments.

Responsibilities:

  • Oversee and coordinate technical activities of assigned system administrators, providing leadership on enterprise Windows infrastructure operations.
  • Provide Tier 3 support for in-house developed systems and site-unique enhancements.
  • Maintain Windows server operating systems at Government-required versions.
  • Maintain COTS, GOTS, and Open-Source software at required versions.
  • Install, configure, test, administer, and troubleshoot server and client software upgrades.
  • Develop engineering assessments of system configurations and recommend improvements.
  • Support network monitoring activities and firewall configuration as required.
  • Administer Active Directory architecture, DNS, DHCP, and Virtual Desktop Infrastructure (VDI) environments.
  • Manage VMware environments including vSphere, ESXi, and vCenter.
  • Support SAN storage, enterprise backup and recovery solutions, and automation through PowerShell scripting.
  • Participate in change and configuration control processes to ensure compliance within classified DoD environments.

Additional Information

  • Position located on-site
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.

PREFERRED:

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

Equal opportunity employer, including disability/vets.

Posted 2026-05-30

Recommended Jobs

Extended Day Assistant (2026-2027)

All Saints Catholic School
Manassas, VA

All Saints Catholic School is seeking a part-time assistant for the Extended Day Program for the 2026-2027 school year. Position Summary The Extended Day Assistant is responsible for providing for th…

View Details
Posted 2026-06-25

Infrastructure & Capital Projects - Construction Manager, ANS

Accenture Infrastructure and Capital Projects, LLC
Chase City, VA

Job Description Job Description You’ve Never Been Satisfied with "Good Enough."   You want to make an impact, not just manage projects, but change how the world gets built. At Accenture Infra…

View Details
Posted 2026-06-24

Inbound Sales Specialist - Pest & Mosquito Authority

Commonwealth Vector Control
Richmond, VA

Job Description Job Description Salary: Discussed at Interview Inbound Sales Specialist Mosquito & Pest Authority | Richmond, VA | Full-Time | On-Site You close. We send the leads. Mosqu…

View Details
Posted 2026-07-03

JUNIOR PROGRAM MANAGER

Alexton Incorporated
Lorton, VA

Job Description Job Description Education : B.A. or B.S. degree in business or information technology related field. Basic Experience: Six years of accounting or financial experience, incl…

View Details
Posted 2026-03-29

Family Medicine Physician

Palm Careers
Winchester, VA

Palm Health Resources is hiring multiple Family Medicine Physicians for a fantastic thriving Primary Care facility in the stunning Shenandoah Valley. This area is the perfect for you and your family …

View Details
Posted 2026-01-28

National Account Manager - Heavy Equipment (Forestry)

Liebherr USA Co.
Newport News, VA

The National Account Manager - Forestry manages sales activities of Liebherr Construction Equipment Div. (LUS-EMT) in the United States with appointed National Accounts related to the forestry and wo…

View Details
Posted 2026-05-29

Regional Operations Manager- Ready Mix Concrete Industry

Rockingham Redi-Mix
Roanoke, VA

Job Description Job Description We are seeking a skilled and results-driven Regional Operations Manager to oversee the operations of our ready-mix concrete plants within a designated region (Lexi…

View Details
Posted 2026-05-16

Physical Therapist

Elite Therapy Solutions
Winchester, VA

Job Description Job Description Salary: starting at $75000.00 Searching For Motivated and Fun Physical Therapist Candidates to Join Our Team at Pro PT in Winchester, VA! Sign on Bonus!!! We a…

View Details
Posted 2026-07-05

Sales Manager

Audi Hampton
Hampton, VA

Job Description Job Description ```html We are seeking a dynamic and motivated Sales Manager to join our team at Audi Hampton. The ideal candidate will be responsible for leading our sales team…

View Details
Posted 2026-05-07

Rotating Equipment Specialist

Hudson Manpower
Fairfax, VA

Job Title: Rotating Equipment Specialist Industry: Oil & Gas / Refinery Qualification: Bachelor’s Degree in Mechanical Engineering Experience: Minimum 15 Years The Rotating Equipment …

View Details
Posted 2026-04-08