Java Backend Developer

Requisitos

• Design, develop and maintain RESTful APIs and microservices in Java 21+ with Micronaut or Spring Boot, following OpenAPI and Swagger stan..
• Integrate external systems and third-party providers via OAuth2, JWT, webhooks and REST APIs
• Implement event-driven messaging with Apache Kafka
• work with PostgreSQL and MongoDB ensuring performance and data consistency
• Maintain internal domain libraries
• write unit and integration tests with a TDD approach
• Deploy services on AWS (S3, Secrets Manager, Elastic Beanstalk), containerise with Docker, contribute to CI/CD (GitLab CI preferred)

Desejáveis

• Solid senior-level backend experience with Java 21 or higher
• Hands-on experience running microservices in production with Micronaut (strongly preferred) or Spring Boot, incl
• OAuth2, JWT, REST API i..
• Strong knowledge of PostgreSQL, Liquibase, JDBC, MongoDB, Apache Kafka and event-driven architecture
• Testing experience with JUnit 5, Testcontainers, Mockito and WireMock
• Comfortable with AWS, Docker, CI/CD pipelines, Git and Git-flow