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.

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.

⚙ Design and implement Java services, REST APIs, integration adapters, and extension components using Java and the Spring ecosystem.
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.
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 cloud-native engineering practices.
Ensure solutions meet performance, reliability, scalability, and security standards.

Strong professional experience developing enterprise applications with Java .
Hands-on experience with Spring Framework and Spring Boot .
Solid knowledge of Hibernate/JPA , relational databases, and SQL optimization .
Strong testing experience using JUnit , Mockito , and integration/contract testing frameworks.
Experience working with Git , Maven/Gradle , CI/CD pipelines, and code review practices.
Understanding of secure coding principles, authentication, authorization, observability, logging, and monitoring.
Excellent communication sk

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