Senior Java Developer - AWS, RxJava, Microservices (Remote)

UST España & Latam is seeking a Senior Java Developer to design, develop, and evolve mission-critical backend services. You will work on scalable microservices using Java 17/21, Spring Boot, and reactive architectures in a cloud environment.

You will collaborate with cross-functional teams, implement gRPC APIs, and ensure high performance with robust testing and CI/CD practices. English proficiency required; remote-friendly hybrid setup offered.