> Markdown version of [/jobs/ext/216462-windows-systems-administrator-team-lead](https://www.wearedevelopers.com/jobs/ext/216462-windows-systems-administrator-team-lead). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Windows Systems Administrator Team Lead - **Company:** One Inc - **Location:** Arlington, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Systems Engineering, Configuration Management, System Configuration, Dynamic Host Configuration Protocol, Desktop Virtualization, Domain Name System (DNS), VMware ESX Servers, IT Management, Windows Servers, Network Monitoring, Windows PowerShell, VMware VSphere, Information Technology, Vcenter, Free and Open-Source Software, Firewall Services Module, Vmware - **Published:** May 31, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=a953768c32c82ad1 ## About the Role Do you have experience in Systems engineering?, * 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. ## Description 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., 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. ## Related Videos - [Your Manager Doesn’t Come with a User Manual (But You Can Totally Write One)](https://www.wearedevelopers.com/videos/1495-your-manager-doesn-t-come-with-a-user-manual-but-you-can-totally-write-one) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Hacking MSSQL on Cloud. 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