We are looking for a Senior Java Server-side Engineer to develop and enhance a Backend-for-Frontend service layer that drives high-traffic mobile experiences for clients around the globe. You will work alongside engineers, product partners, designers, and QA to ship dependable APIs and top-tier code. Join us to help shape the next wave of mobile platforms

Responsibilities

Architect and develop the Backend-for-Frontend API layer consumed by mobile applications
Build REST endpoints and service contracts that enable mobile user journeys
Enhance service performance via profiling, analysis, and focused improvements
Rework legacy code to boost maintainability, readability, and reliability
Produce clean, testable code and sustain strong unit test coverage
Connect with existing backend services and manage bespoke and legacy dependencies
Resolve defects by identifying root causes and delivering safe, timely patches
Partner with engineers, product partners, designers, and QA to ship features
Support CI workflows and build tooling to keep delivery running smoothly




Exchange ideas and champion great user experience through API and data design
Eliminate unnecessary code and cut technical debt to keep the codebase healthy

Requirements

Qualifications in Computer Science or related field (Bachelor’s), or equivalent experience
3+ years of experience building server-side applications in Java
Competency in solution design for open-ended problems
Expertise in Spring Boot for building and maintaining services
Proficiency in REST API development, including integration with legacy services
Knowledge of algorithms and data structures for efficient implementations
Skills in unit testing with a test-driven mindset
Familiarity with build tools and experience with CI workflows
Capability to analyze and optimize performance for backend services
Proficiency in troubleshooting for debugging and fixing production issues
Showcase of self-starter mindset with ownership and proactive communication

📌 Senior Java Server-side Engineer (Argentina)
🏢 EPAM Systems
📍 Argentina