Lead Java Server-side Engineer
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We are looking for a Lead Java Server-side Engineer to drive a Backend-for-Frontend service layer powering high-traffic mobile products used by clients worldwide. You will work closely with engineers, product partners, designers, and QA to ship reliable APIs, improve legacy integrations, and keep performance high.
Responsibilities
- Architect and build the Backend-for-Frontend API layer consumed by mobile applications
- Implement REST endpoints and define service contracts aligned to mobile user flows
- Optimize backend performance through profiling, analysis, and focused improvements
- Modernize legacy code through refactoring to improve reliability and readability
- Create clean, testable code and keep unit test coverage at a strong level
- Connect to existing backend services and manage bespoke and legacy dependencies
- Diagnose defects, identify root causes, and release safe patches quickly
- Partner with engineers, product partners, designers, and QA to deliver features end to end
- Contribute to CI workflows and strengthen build tooling to keep releases smooth
- Promote great user experience by influencing API and data design decisions
- Reduce technical debt by removing redundant code and keeping the codebase healthy
Requirements
- Extensive background in Java building server-side applications (5+ years)
- Strong collaboration skills in senior-level, cross-functional environments
- Proven strength in solution design for problems with unclear constraints
- Expert-level Spring Boot experience building and maintaining services
- High proficiency in REST API development, including working with legacy services
- Deep understanding of algorithms and data structures for efficient code
- Consistent unit testing ability with a test-driven approach
- Working knowledge of build tools and practical experience with CI workflows
- Demonstrated performance profiling and optimization skills for backend services
- Strong debugging and troubleshooting skills for production incidents
- Ownership mindset with proactive communication and follow-through
- Bachelor’s degree in Computer Science or related discipline, or equivalent experience
- Upper-Intermediate English proficiency (B2) for effective communication
Nice to have
- Docker for local containerized development and CI pipeline execution
- Gradle for build configuration and dependency management
- GraphQL and GQL API design/consumption experience
- Kotlin for JVM-based server-side development
- RAML for API modeling and documentation
We offer
- International projects with top brands
- Work with global teams of highly skilled, diverse peers
- Healthcare benefits
- Employee financial programs
- Paid time off and sick leave
- Upskilling, reskilling and certification courses
- Unlimited access to the LinkedIn Learning library and 22,000+ courses
- Global career opportunities
- Volunteer and community involvement opportunities
- EPAM Employee Groups
- Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn
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