Miratech in Spain is seeking a Senior Java Developer to contribute to development and maintenance of a tax administration system for a large European client. You will work on backend components using Java, Spring, and Quarkus within a microservices architecture. Candidates should have 6+ years of Java experience, strong knowledge of REST/SOAP, Kafka, PostgreSQL, and Docker/Kubernetes, and be able to collaborate with distributed teams; English proficiency required. The role supports remote work.