Senior Java Developer (Madrid)

Mid–Senior Java Engineer (Contract)
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We’re currently seeking an experienced Java Engineer to join a growing team working on a modern, cloud‑based platform. This is a hands‑on contract role focused on building and enhancing backend services and APIs within a scalable architecture.
What you’ll be doing
Developing and maintaining backend applications using Java and Spring Boot
Designing and improving RESTful APIs and system integrations
Writing clean, testable, and maintainable code
Contributing to architectural discussions and technical decision‑making
Participating in code reviews, including validating AI‑assisted contributions
Supporting testing efforts (unit and integration)
Working closely with cross‑functional teams across engineering, QA, and product
Troubleshooting issues across development and live en...