

Senior Systems Administrator / IT Infrastructure Specialist with 8+ years of experience administering, securing, and supporting enterprise Windows environments in high-availability, mission-critical organizations. Deep expertise in Windows Server, Windows 10/7, Active Directory, group policy, system imaging, patch management, backup and recovery, PKI, and information assurance. Proven success supporting over 330,000 users across 17 secure networks, leading enterprise OS migrations, coordinating large-scale exercises, and safeguarding over $70 million in IT infrastructure assets. CompTIA Security+ certified, with a strong background in cybersecurity fundamentals, operational IT leadership, and Tier II/III troubleshooting in both classified and commercial environments.