Remote Java Developer: Spring Microservices Expert

Alten Delivery Centre Spain; Mos; A distancia; EUR 45.000 - 65.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health insurance

Flexible work options

Training platforms

Descripción de la vacante

UST is seeking a Java Developer to join a highly innovative team building microservice-based cloud solutions in the utility technology sector. You will design, develop, and support secure, scalable Java services, APIs, and integrations connecting critical business systems.

You will work with Spring, Hibernate/JPA, REST APIs, and CI/CD in a client-focused environment, applying best practices for security, testing, and performance.

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.
• 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

SQL optimization

REST APIs

OpenAPI/Swagger

Event-driven

Asynchronous messaging

JUnit

Mockito

Contract tests

Git

Maven/Gradle

CI/CD

Code reviews

Security practices

Authentication

Authorization

Observability

Logging

Monitoring

Descripción del empleo

UST is seeking a Java Developer to join a highly innovative team building microservice-based cloud solutions in the utility technology sector. You will design, develop, and support secure, scalable Java services, APIs, and integrations connecting critical business systems.

You will work with Spring, Hibernate/JPA, REST APIs, and CI/CD in a client-focused environment, applying best practices for security, testing, and performance.