Java, Hibernate, Maven, PostgreSQL, Spring Boot, Spring Cloud, Spring, Nosql, Git, Docker, Reactjs, Oracle, Nestjs, Kubernetes, API First Mindset, Java EE Application servers like Apache Tomcat, Continuous integration systems like Jenkins or GitLab CI, Object-oriented design, SAFe methodologies, Apigee API Gateway, Java IDE like Eclipse or IntelliJ, Agile development methodology, Spring webflux