Windows Server Administrator

ManTech International seeks a Windows Server Administrator to support critical national security missions. In this role, you will install, configure, secure, and maintain Windows servers and related services in enterprise and classified environments. Responsibilities include Active Directory administration, Group Policy management, patching, backup and recovery, performance monitoring, and troubleshooting complex issues. You will automate routine tasks with PowerShell, support virtualization platforms, document configurations, and collaborate with cyber and systems engineering teams to ensure system availability, compliance, and mission readiness while upholding strict security standards.