Design and develop backend microservices using Java 21 and Spring Boot 3.x;
Build and maintain RESTful APIs with clear error handling and documented OpenAPI/Swagger specifications;
Implement gRPC services and clients, including Protobuf schema design;
Develop event-driven solutions using Apache Kafka consumers and producers;
Integrate backend services with external systems (OIC, Salesforce, SAP ISU);
Implement authentication and authorization using OAuth 2.0 / OIDC, including token validation and role-based access;
Write unit and integration tests using JUnit 5, Mockito, and Testcontainers;
Collaborate with DevOps teams on containerized deployments in Docker and Kubernetes;
Ensuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy.

University degree in Computer Science, Engineering, or a related field;
3–5+ years of experience in backend development;
Strong hands-on experience with Java (preferably Java 21) and modern language features;
Proven experience with Spring Boot (microservices, REST controllers, data access layers, security);
Experience migrating applications from older Java versions (e.g., Java 11);
Solid knowledge of Kafka-based event-driven architectures;
Experience with PostgreSQL, Azure Cosmos DB, and Redis;
Good understanding of containerization (Docker) and Kubernetes fundamentals;
Strong understanding of backend security concepts (OAuth2, OIDC, RBAC);
Experience writing automated tests at unit and integration level;
Experience working in an Agile environment;

Nice to Have

Senior Java Backend Engineer

Key skills