Senior Java Engineer

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 Requirements 3+ 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 development RAML experience for API modeling and documentation