Provides technical leadership and hands-on engineering for Entellitrak-based Defense Health IT systems. Develops and integrates Java/JEE components, interfaces, APIs, database schemas, and web services; troubleshoots production issues; supports testing, releases, deployments, and documentation. Maintains Microsoft SQL Server environments and ensures compliance with DoD cybersecurity, configuration-management, RMF, STIG, NIST, and testing requirements. Supports Agile delivery, authentication modernization, vulnerability remediation, incident response, and occasional after-hours production operations.