We are still looking for the very Top Talent...and we would be delighted if you were to join our team
More in details, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work company with over 35,000 employees all over the world and presence in more than 35 countries . We are leaders in digital technology services, and we provide large-scale technological solutions to big companies.
What we look for?
We are looking for a Java Developer to join a highly innovative team working within a microservice-based cloud environment in the utility technology sector. You will play a key role in designing, developing, and supporting secure, scalable, and maintainable Java services, APIs, and integrations that connect critical business systems and internal tools.
⚙ Key Responsibilities:
- Design and implement Java services, REST APIs, integration adapters, and extension components using Java and the Spring ecosystem.
- Translate business requirements, user stories, and interface specifications into clean, maintainable, and scalable code.




- Develop RESTful APIs with proper validation, versioning, pagination, security, and error-handling mechanisms.
- Implement reliable event-driven and asynchronous integrations, ensuring resiliency through retry, timeout, correlation, idempotency, and dead-letter patterns.
- Build and optimize persistence layers using Hibernate/JPA and SQL best practices.
- Integrate microservices and internal tools with CRM, finance, payment, analytics, web, and mobile platforms.
- Create and maintain unit, integration, component, and contract tests to ensure high-quality software delivery.
- Participate in code reviews, technical design sessions, backlog refinement, and secure development practices.
- Troubleshoot production incidents using logs, metrics, traces, and database analysis, providing sustainable root-cause solutions.
- Support CI/CD pipelines, automated quality controls, deployment processes, and clou

📌 Senior Java Developer (Navarra)
🏢 UST España & Latam
📍 Navarra