Full Stack Java Senior Developer / Developer

Overview We are looking for a skilled and experienced  Full Stack Java Senior Developer / Developer  to join our development team. The ideal candidate will have a solid background in object-oriented programming, strong experience with the Spring Framework, and practical frontend experience with React JS. This role requires a collaborative mindset, a sharp eye for detail, and an interest in developing high-quality, scalable, and maintainable software systems. Key Responsibilities Design, develop, test, and maintain high-performance, reusable Java applications. Develop and maintain responsive frontend components using React JS, JavaScript, and related technologies. Develop and optimize SQL queries for relational databases such as DB2 or Oracle. Work with messaging systems such as RabbitMQ.  Develop scalable solutions using microservices architecture to ensure modularity, availability, and ease of deployment in distributed systems. Build and consume RESTful APIs to enable backend-to-frontend integration Analyse requirements and propose effective technical solutions considering functional and non-functional requirements. Participate in the full software development lifecycle (SDLC), including design, implementation, testing, deployment, and support. Write automated unit and integration tests using JUnit and Mockito. Write and maintain documentation of software components and code. Conduct and participate in peer code reviews and design discussions. Ensure performance, security, and availability of applications. Identify and address technical risks and issues; propose and implement practical solutions. Conduct demos and facilitate acceptance discussions with Product Owners to validate deliverables. Maintain a proactive attitude toward learning and adopting new tools and frameworks. Required Skills and Qualifications Overall 5+ years of experience Degree in Computer Science, Engineering, or a related field, or equivalent professional IT qualification. Proven experience in Java development, preferably with  Java 17  (minimum  Java 8 ). Strong knowledge of  Spring Framework 6 ,  Spring Boot 3 . Experience in  Test-Driven Development (TDD)  and  Behaviour-Driven Development (BDD)  with hands-on use of  JUnit  and  Mockito . Demonstrated experience in frontend development using  React JS  and  JavaScript . Hands-on experience with  relational databases,   DB2  or  Oracle . Solid understanding of  RESTful API  design principles. Experience with  microservices  architecture. Hands-on experience with messaging systems such as  RabbitMQ ,  IBM MQ . Experience with  Maven ,  Docker , and  Jenkins . Experience with GIT and understanding of standard branching strategies (Release Flow or GIT flow). Understanding of secure coding standards (e.g.,  OWASP , …