The Senior Virtual Desktop Infrastructure (VDI) Administrator provides administration, monitoring, and updates to virtual infrastructure systems, supports critical system patching, responds to incidents, and schedules activities. This role is a subject matter expert on virtual infrastructures, encompassing virtual networking, virtual systems, zero trust architectures, and virtual capabilities. As the Senior VDI Administrator you will be a key member of GDIT supporting the US Army Intelligence and Security Command (INSCOM) mission. Serve as the Senior Administrator for virtual infrastructure environments, including VMware, Nutanix, and Hyper-V, supporting both virtual servers and desktops. Configure and maintain virtual delivery of desktop services utilizing both Citrix Virtual Apps and Desktop (CVAD) and Omnissa Horizon (transitioning focus towards CVAD). Administer and support Microsoft technologies including FSLogix, Active Directory Services, DHCP, DNS, and Group Policy Objects (GPO). Provide Tier 2/3 support, diagnosing and resolving complex issues within the virtual infrastructure. Apply DISA Security Technical Implementation Guides (STIGs) as required to maintain a secure virtual environment. Develop functional requirements through interaction with end-users and coordinate with support teams on systematic enhancements or changes. Monitor, organize, and collaborate with Network Operations, Cyber Security, and other agencies to optimize and implement solutions. Mentor and train junior personnel, fostering skill development in virtual infrastructure technologies. Manage incident tickets, providing timely status updates in accordance with Service Level Agreements (SLAs). Perform system and application diagnoses to remediate issues, engaging other teams as needed.