Server - Side Engineer Java Backend Developer

We're looking for an experienced Server-Side Engineer to develop and support the Backend-for-Frontend (BFF) service layer powering mobile applications used by millions of customers worldwide. Role: Server-Side Engineer / Backend Developer Location: Burgess Hill, UK | Hybrid – 3 Days Onsite / 2 Days Remote Key Skills & Experience ✅ Java 17+ or Kotlin ✅ Spring Framework & Microservices ✅ Gradle & Build Automation ✅ REST APIs / GraphQL ✅ CI/CD & Continuous Integration ✅ Unit Testing & Troubleshooting ✅ Asynchronous Programming ✅ Performance Optimization ✅ Legacy Code Modernization & Refactoring ✅ Mobile Backend / API Development Ideal Candidate: A strong backend/server-side engineer with experience building scalable applications, writing clean and maintainable code, solving complex technical problems, and working with modern engineering practices.