Senior Java Backend Developer (Legacy & Microservices)

Senior Java Backend Developer (Legacy & Microservices)

Initium Software
Initium Software
Madrid, SpainCompetitiveRemoteAdded 14 days agoSenior · 5+ years🇬🇧English: Required

The employer limits where this remote role can be done: Modalidad 100% remota desde España

Need a visa? The advert says visa sponsorship isn't available for this role.

About the role

This is a remote job position.

At Initium Software, we connect the best technical talent with the most challenging and innovative projects on the market. We are not a traditional consultancy; we are strategic partners who believe in real impact through technology. As a Java Backend Developer, your mission will be to drive the evolution and maintenance of critical systems, bridging legacy architectures and modern ecosystems based on microservices.

What you'll do

  • Design, develop, and maintain robust applications with Java 8/11 and the Spring ecosystem (Boot, Batch, MVC).
  • Ensure continuous integration and smooth interaction between legacy systems and the Target platform.
  • Build and integrate RESTful APIs, OpenAPI, and Swagger under a microservices architecture.
  • Guarantee code quality by implementing advanced unit and integration tests with JUnit, Mockito, and Spring Test.
  • Manage and optimize data persistence using Oracle, JPA, and JDBC.

What we're looking for

  • At least 5 years of proven experience in Backend development with Java (8, 11) and Spring Framework.
  • Proficiency in building microservices architectures, RESTful APIs, and automation tools such as Maven.
  • Solid experience working with relational databases (Oracle, JPA, JDBC).
  • Intermediate-advanced English level (B2) to interact in multicultural environments.
  • Experience working under agile methodologies (Scrum) and excellent interpersonal skills.

Nice to have

  • Have experience with Message Brokers (Kafka, RabbitMQ) or database migration tools (Liquibase/Flyway).
  • Know continuous integration or deployment tools such as OpenShift or Azure DevOps.
  • Have worked with reactive programming, Feature Flags, or static analysis tools such as Sonar.
  • Are passionate about learning, sharing ideas, and growing together with the team.

What you'll get

  • Competitive salary range based on merit.
  • 100% remote work from Spain, ensuring maximum flexibility and work-life balance.
  • Culture based on transparency, continuous growth, and real impact.
  • Opportunity to work on challenging projects within a collaborative and innovative environment.

At Initium, we don't just develop technology: we create an environment where people can grow, add value, and make their mark.

Apply now and let's talk.

How you'll work

full-time

remote

How will we measure your impact?

  • Monthly compliance with Project efficiency objectives
  • Alignment and effective execution of the strategic plan

This job was automatically translated to English, .

Apply at Initium Software