Senior Systems Administrator Australia - TS/SCI with Polygraph - General Dynamics Information Technology

Key Responsibilities

• Provide Tier 2 support for a multi‑site Microsoft Enterprise environment spanning CONUS and OCONUS.
• Maintain and troubleshoot Windows Server and Red Hat Enterprise Linux systems within secure, hybrid cloud infrastructures.
• Implement and enforce security policies across multiple security enclaves, ensuring compliance with federal standards.
• Collaborate with cross‑functional teams to deploy updates, patches, and configuration changes with minimal downtime.
• Document procedures, create knowledge base articles, and mentor junior staff on best practices.

Requirements

• 5+ years of experience as a Microsoft Enterprise Systems Administrator.
• Proficient with Windows Server, Active Directory, Group Policy, and PowerShell scripting.
• Strong knowledge of Red Hat Enterprise Linux administration and automation tools.
• Experience managing hybrid cloud environments and securing multi‑enclave networks.
• Excellent problem‑solving skills and ability to work independently in a high‑security setting.