Windows Systems Administrator - McLean, VA - TS/SCI

Job description

Senior System Administrator (Windows) Location: McLean, VA (transitioning to Chantilly, VA) Clearance Required: Active TS/SCI with CI Polygraph Salary Range: $185,000 – $265,000 Travel: Up to 20% Overview: We are seeking a highly skilled Senior System Administrator to join a dynamic infrastructure team supporting next-generation technologies, including initiatives in the Artificial Intelligence (AI) space. This role is ideal for a hands-on technical expert who thrives in complex environments and is passionate about building, maintaining, and optimizing enterprise systems. Key Responsibilities: - Design, implement, and maintain Windows-based systems, networks, and applications - Architect and support enterprise-level Windows infrastructure Administer and manage: - Active Directory - Group Policy - DNS - File servers - Exchange / enterprise email systems - Manage patching, updates, and system performance optimization - Monitor systems, troubleshoot issues, and ensure high availability - Support system deployments using tools such as SCCM or MDT - Develop and maintain technical documentation and standard operating procedures - Provide Tier II/III technical support via phone, email, an...