Windows System Administrator

Leidos seeks a Windows System Administrator to support secure enterprise Windows environments in Suitland, Maryland. The role includes server and workstation upgrades, vulnerability management, system hardening, deployment support, and documentation in a mission-critical setting. An active TS/SCI clearance and qualifying DoD IAT certification are required. Build and upgrade Windows servers and workstations. Run and analyze ACAS vulnerability scans and remediate findings. Manage Group Policy Obj…