We’re seeking a seasoned Java Backend Developer to join a core engineering team working on consolidation of microservices, legacy system upgrades, and application modernization. This role demands strong backend fundamentals, an eye for clean architecture, and the ability to collaborate with teams across geographies. Must-Have Experience 3-6 years professional experience in Java development Proficient with Java 11 Deep expertise in Spring / Spring Boot Strong understanding of microservices architecture Familiarity with messaging platforms like Kafka, RabbitMQ, or equivalent Hands-on with NoSQL databases such as MongoDB Solid grasp of the SDLC and release pipeline (versioning, CI/CD, Agile delivery) Proven skills in debugging and interpreting application logs Strong communication skills, with the ability to collaborate across distributed global teams Comfortable with legacy systems : refactoring, maintaining, and upgrading Project Involvement Includes Consolidating multiple legacy microservices into domain-aligned unified services Migrating legacy Java applications to modern Spring Boot infrastructure Diagnosing production issues using logs, stack traces, and performance metrics Participating in application upgrades, dependency migration, and technical cleanup Working closely with cross-functional teams across multiple time zones and regions Nice to Have Familiarity with GitLab, GitHub, Bitbucket or similar Exposure to automated testing tools : JUnit, Mockito, Gherkin, etc. Understanding of feature flag rollouts, blue/green deployments, rollback strategies Experience working in globally distributed Agile teams Ideal Candidate You’re not just a coder — you’re a problem solver who can read a legacy stack, reason through refactors, and deliver clean, tested services that scale. If you enjoy debugging complex systems, streamlining monoliths into modular services, and working with engineers across time zones — we want to talk to you. If you are interested please send me your updated CV on tejaswini.athreya@datainc.uk with below details to tejaswini.athreya@datainc.uk -Right to work/Citizenship in UK -Current salary: -Expected Salary: -Notice Period: -Are you fine with 5 days onsite in Birmingham,UK: -Current Location: Regards Tejaswini Data INC