Administered Active Directory on five multilevel security networks with 7K geographically dispersed users and 5K information systems. Supported intelligence information system domain for 100 applications/services and 3K users. Responded to trouble tickets and provided prompt technical support, troubleshooting, and problem resolution. Installed and configured workstations, OS, software, and user accounts. Manage $245M Desktop Support and Service Contract, as well as in-processing/out-processing and documentation for 150+ contractors at five global locations. Oversee creation of 300+ enterprise admin accounts. Interface with key stakeholders to ensure contractors meet obligations, resolve issues, and communicate shortfalls to leadership. Track equipment purchases of $1.5M and report on monthly expenditures. Certify contractor labor payments and travel expenses annually.- Played key role in execution of Windows 7 migration plan, including remediating six critical issues and fixing 100 applications.- Troubleshot and corrected major issues that saved millions of dollars and increased overall productivity, such as reducing login script time from 10 minutes to 30 seconds, repairing system configuration managers, and eliminating server vulnerabilities.- Ensured 100% network security by verifying contractor status, recertifying 110+ administrative access accounts, and deleting accounts as necessary.- Led 5-member team installing battery backups for computers to mitigate data loss for multinational partners.- Installed PCs and network accounts for major training event to achieve zero downtime.- Modernized and upgraded master desktop image, upgraded 24 programs, and deployed security patches to decrease update time by 90%.- Spearheaded and/or approved procurement of ~$2M in hardware to replace outdated and end-of-life assets at global locations.

Led teams of up to 12 supporting networks valued up to $15M. Implemented network updates and reported status to senior leaders. Administered servers and provided technical guidance and solutions for systems, software, servers, storage, and network equipment. Certified user accounts to prevent security breaches.- Proactively identified and resolved issues to prevent costly downtimes and delays.- Freed up 30GB of space by cleansing file server storage and executing monthly scans to remove unapproved data.- Governed security group permissions, updated 2K file server folders, and maintained control of 53TB of sensitive data.- Flawlessly managed $5K upgrade project, built/installed two servers and converted domain controllers.- Deployed to Qatar as Executive Communications Supervisor (6/11-6/12) overseeing sustainment of mobile and stationary communication and information systems, including 24x7 troubleshooting and support.- Prevented data loss by directing migration of 20GB of classified data from failing intelligence server.- Increased storage capacity from one month of data to four and cut restoration time by 75% by implementing new NAS.- Consistently lauded for technical expertise and unparalleled ability to resolve complex issues in a timely and effective manner.