The Tier 3 Enterprise Management (EM) Administrator provides advanced operational and sustainment support to the DHA Domain and Directory Services Branch (DDSB) enterprise management environment. This role ensures the effective delivery, security, and optimization of Microsoft Endpoint Configuration Manager (MECM), Intune, and emerging enterprise management tools across on-premises and MED365 cloud environments. Key responsibilities include: Implementing, sustaining, and monitoring enterprise management infrastructure to maintain approved release levels and ensure compliance with DHA & DoD cybersecurity standards. Supporting patch management, including routine, zero-day, and maintenance window operations, ensuring timely compliance across enterprise devices. Developing, maintaining, and deploying operating system images, software packages, and hardware driver packages to support enterprise delivery requirements. Creating and sustaining asset, software, and hardware intelligence, license management reporting, and SQL-based enterprise management reporting. Managing ITC test environments and custom proof-of-concept builds to validate enterprise solutions prior to production deployment. Providing enterprise monitoring, preventive maintenance, and technical documentation in accordance with DHA service management and reporting standards. The EM Administrator will collaborate across enterprise IT and cybersecurity teams, contribute to Zero Trust and Identity/Access Management initiatives, and ensure mission assurance through compliant, reliable, and secure IT services delivery.