At least 5 years of commercial experience in backend or microservices development, Hands-on work with Java 11+ and the Quarkus framework in production environments, Understanding of microservices architecture and cloud-native best practices, Familiarity with Docker, Kubernetes, and one of the CI/CD tools (GitLab CI, GitHub Actions, Azure DevOps, Jenkins), Very good command of English, both written and spoken, Strong communication skills and experience working in agile teams, Fluent Polish required, Residing in Poland required