Lead Java Server-side Engineer

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. Apply today to help define the next wave of mobile platform capabilities.

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 developmentRAML 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 Linked In Learning library and 22,000+ courses

Global career opportunities

Volunteer and community involvement opportunitiesEPAM Employee Groups Award-winning culture recognized by Glassdoor, Newsweek and Linked In