Terrell Williams

About

CompTIA Security+ certified IT professional and U.S. Army veteran with more than eight years of experience supporting enterprise technology environments, administering secure systems, and maintaining critical network infrastructure. Background combines hands-on technical expertise with operational discipline from military service and enterprise IT support. Specializes in keeping systems reliable, protecting access to sensitive resources, troubleshooting complex technical issues, and helping organizations maintain secure, efficient technology operations. As a Senior System Administrator with ARMA Global, a General Dynamics company, managed Active Directory accounts, user permissions, VPN access, PKI authentication, and role-based access controls. Responsibilities included supporting enterprise collaboration platforms, resolving infrastructure issues, managing service requests, and working across technical teams. Previously provided technical support in an enterprise environment serving more than 70,000 users, handling account administration, Windows troubleshooting, incident management, and executive-level support. During more than eight years in the U.S. Army, supported secure communications and network operations across deployed and home-station environments. Supervised and mentored 32 military professionals. Maintained encrypted communications capabilities. Supported SIPR/NIPR networks, COMSEC, satellite communications, and cybersecurity controls. Core strengths include Identity and Access Management (IAM), Active Directory, Systems Administration, Network Security, and IT Infrastructure, with experience across Microsoft enterprise technologies, VMware, Hyper-V, PowerShell, PKI, VPN administration, and technical service delivery. Currently IT Consultant | Cybersecurity & Identity and Access Management with Accumentum® (Austin, Texas Metropolitan Area), focused on IAM, enterprise systems security, and infrastructure operations.