We are looking for an experienced Backend Developer to join a large-scale digital transformation project within the aviation industry. In this role, you will contribute to the modernization of a customer loyalty platform by developing and integrating backend services with a next-generation loyalty system. Work Place: Tokyo, Japan Work Style: Hybrid/Onsite, as per project requirements. Key Responsibilities: - Responsible for Developing APIs, test, integrate, performance optimization and delivery as per requirements transition and transformation. - Responsible to deliver the assigned functionality with agreed quality and with in timelines. - Create and maintain Design Documentation. - Able to coordinate with customer on clarifications/issues and requirements. ### Requirements Essential Skills/Experience: - Experience in backend development using Java ver17, Spring Boot, Maven, SQL, AWS and JUnit. - Proficiency in Japanese (Native level / Business level N2 above) and everyday conversational English. - Excellent documentation and technical skills. - Experience with Agile/Scrum methodologies and tools (e.g., JIRA, Confluence). - Ability to work across onsite/offshore teams and manage cross-cultural communication. Nice to have: - Experience in Airline domain.