Senior Java Engineer - Remote, DoD Platform Modernization

Concept Solutions, LLC is seeking an experienced Senior Java Software Engineer to support a mission-critical modernization program for a DoW customer. You will sustain existing applications built with Java Spring Boot and React, PostgreSQL, containerized on AWS ECS/Fargate, while integrating with the modernization platform. The role requires strong enterprise Java development, production support in cloud environments, and active security clearance readiness.