Senior Full-Stack Engineer: Java/Spring & Angular Expert

IOON is seeking a Senior Full Stack Developer to drive backend in Java 21/Spring Boot 3.x and frontend in Angular 21 in Barcelona, Spain. English fluency (B2+) is required to collaborate across teams.

You will implement robust REST services, work with PostgreSQL, MongoDB, and XML-heavy integrations, and help shape architecture with hexagonal/DDD in Maven environments. Emphasis on CI/CD, tests, and modern frontend patterns.