Senior Java Backend Engineer - Spring Boot & Microservices

Quantum Technologies. LLC in McLean, VA is seeking a highly experienced Backend Engineer to design, develop, and maintain enterprise-grade backend systems using Java and Spring Boot. You will own end-to-end backend feature lifecycles, implement RESTful APIs, and ensure secure, scalable inter-service communication. Collaborating with frontend, DevOps, QA, and product teams, you will drive architectural planning, perform code reviews, mentor junior developers, and uphold coding standards and