Senior Java AWS Engineer - Cloud APIs & Microservices

Ust España & Latam; Zaragoza; Híbrido; EUR 42.000 - 64.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health and life insurance

Flexible benefits

Remote work options

Training platforms

Descripción de la vacante

UST is a multinational technology services leader seeking a Java Developer to design, build, and maintain scalable Java services in a microservice-based cloud environment. You will implement REST APIs, event-driven integrations, and robust persistence with Hibernate/JPA in a dynamic utilities sector.

You will collaborate on secure coding, testing, and DevOps practices, delivering high-quality software and contributing to documentation and operational procedures.

Formación

• 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.
• Experience designing and consuming REST APIs and working with OpenAPI/Swagger specifications.
• Experience with event-driven architectures, asynchronous messaging, or distributed systems.
• 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.
• Strong analytical, problem-solving, and debugging skills.
• Excellent communication skills and fluent English.

Responsabilidades

• 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 cloud-native engineering practices.
• Contribute to technical documentation, operational procedures, and service supportability improvements.
• Ensure solutions meet performance, reliability, scalability, and security standards.

Conocimientos

Java

Spring Framework

Spring Boot

Hibernate/JPA

REST APIs

OpenAPI/Swagger

Event-driven

JUnit

Mockito

Git

Maven/Gradle

CI/CD

Security/Observability

Herramientas

Git

Maven/Gradle

Descripción del empleo

UST is a multinational technology services leader seeking a Java Developer to design, build, and maintain scalable Java services in a microservice-based cloud environment. You will implement REST APIs, event-driven integrations, and robust persistence with Hibernate/JPA in a dynamic utilities sector.

You will collaborate on secure coding, testing, and DevOps practices, delivering high-quality software and contributing to documentation and operational procedures.