We are seeking a Senior Java Engineer to build and evolve a Backend for Frontend service layer that powers high-traffic mobile experiences for clients worldwide.

You will collaborate with engineers, product partners, designers, and QA to deliver fast, reliable APIs and maintain beautiful code.

Responsibilities

Design and deliver the Backend for Frontend API layer for mobile clients

Build server-side services in Java using Spring Boot and modern patterns

Implement and maintain REST APIs with attention to usability and consistency

Optimize performance through profiling, analysis, and targeted improvements

Write unit tests and enforce quality gates through continuous integration

Refactor and simplify codebases by improving or removing legacy code safely

Fix defects quickly and prevent regressions through root-cause analysis

Collaborate with engineers, product partners, designers, and QA to ship features

Integrate with existing backend services and handle compatibility constraints

Propose solutions for ambiguous problems and communicate technical tradeoffs

Requirements3+ years of Java backend development experience

Strong Spring Boot experience building server-side applications

Strong REST API design and integration experience

Strong algorithms and data structures knowledge

Strong unit testing skills and experience with test automation





Build tool experience with CI pipelines and automated quality checks

Performance optimization skills for asynchronous and high-throughput services

Problem-solving skills for open-ended technical challenges

Team collaboration skills in cross-functional environments

Self-starter mindset with ownership and initiative

Bachelor’s degree in Computer Science or equivalent practical experience

Upper-Intermediate English skills (B2) for clear written and spoken communication

Nice to have

Docker experience for local development and deployments

Gradle experience for builds and dependency management

GraphQL experience for API schema design and query optimization

Kotlin experience in server-side developmentRAML experience for API modeling and documentation

We offer

International projects with top brands

Work with integral 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 #J-18808-Ljbffr

📌 Senior Java Engineer (Argentina)
🏢 EPAM Systems
📍 Argentina