Windows Administrator

ManTech International seeks a Windows Systems Administrator to support critical national security missions within our IT & Technical Support teams. You will install, configure, and maintain Windows servers and related services; manage Active Directory, Group Policy, and enterprise patching; monitor system performance and security; and troubleshoot complex issues in secure environments. Collaborate with cyber, engineering, and support teams to implement resilient, compliant solutions. Leverage ManTech's mission-focused, collaborative culture, robust training, and career-growth opportunities to advance your technical expertise while safeguarding U.S. defense and federal customers.