Lead Java Server-side Engineer

We are seeking a Lead Java Server-side Engineer to drive a Backend-for-Frontend service layer powering high-traffic mobile products serving clients worldwide. Collaborate closely with engineers, product partners, designers, and QA to deliver reliable APIs, enhance legacy integrations, and sustain top performance. Apply today to help shape the next wave of mobile platform capabilities.
Responsibilities
Design and build the Backend-for-Frontend API layer consumed by mobile applications
Develop REST endpoints and define service contracts aligned to mobile user flows
Enhance backend performance through profiling, analysis, and targeted improvements
Refactor legacy code to boost reliability and readability
Write clean, testable code and sustain unit test coverage at a strong level
Integrate with existing backend services and manage bespoke and legacy dependencies
Investigate defects, pinpoint root causes, and ship safe patches quickly
Collaborate with engineers, product partners, designers, and QA to deliver features end to end
Support CI workflows and strengthen build tooling to keep releases smooth
Advocate for great user experience by influencing API and data design decisions
Cut technical debt by eliminating redundant code and keeping the codebase healthy
Requirements
Bachelor's degree in Computer Science or related discipline, or equivalent experience
5+ years of experience building server-side applications in Java
At least 1 year of relevant leadership experience
Expertise in Spring Boot for building and maintaining services
Proficiency in REST API development, including working with legacy services
Understanding of algorithms and data structures for efficient code
Competency in consistent unit testing with a test-driven approach
Knowledge of build tools and practical experience with CI workflows
Showcase of solution design for problems with unclear constraints
Qualifications in performance profiling and optimization for backend services
Capability to debug and troubleshoot production incidents effectively
Ownership mindset with proactive communication and follow-through
Skills in collaboration within senior-level, cross-functional environments
Excellent command of written and spoken English (B2+ level)
Nice to have
Familiarity with Docker for local containerized development and CI pipeline execution
Flexibility to use Gradle for build configuration and dependency management
Expertise in GraphQL and GQL API design and consumption
Proficiency in Kotlin for JVM-based server-side development
Knowledge of 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

Work arrangement
Yes