Java Cloud Developer (f/m/x)

Sii Polska is hiring for a dynamic team delivering modern digital solutions focusing on virtual card services and digital platforms for business clients. The portfolio includes mobile and web applications, external APIs like Payment-as-a-Service, serving Scandinavian and Baltic markets.

• At least 4 years of hands-on experience in Java development
• Strong knowledge of frameworks and tools: Spring (Boot, Data, Cloud), JUnit, Spock, JPA, Hibernate
• Solid experience with PostgreSQL, SQL, NoSQL databases, and Redis
• Practical experience with cloud and containerization technologies (Microsoft Azure, Kubernetes, Docker)
• Experience building and integrating REST/SOAP APIs, including Swagger/OpenAPI documentation
• Familiarity with CI/CD and development tools: Jenkins, SonarQube, Git, Gradle
• Very good communication skills in both English and Polish

Nice to have:

• Knowledge of TDD/BDD practices, e.g., Spock, Mockito, Cucumber
• Basic understanding of Domain-Driven Design (DDD)
• Familiarity with service mesh architectures

• Design and implement new features and system improvements
• Ensure software quality through testing and validation against requirements
• Diagnose, troubleshoot, and resolve technical issues
• Collaborate with cross-functional teams in an agile environment
• Participate in team ceremonies and contribute to technical discussions
• Prepare and maintain technical documentation

Residing in Poland required