Android/iOS Native Application Engineer - System Development Department, System Division, Rakuten Bank, Ltd.

Role summary

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This role develops and maintains native mobile applications for Rakuten Bank on Android and iOS. Candidates are expected to have practical experience with Kotlin and/or Swift, mobile application architecture, UI development, API integration, testing, debugging, and release management. Experience working with security-sensitive financial services, authentication, performance optimization, and agile development is advantageous. The successful candidate should be comfortable collaborating with product managers, designers, backend engineers, and operations teams. Strong problem-solving skills, attention to security and quality, ownership of development tasks, and a willingness to improve banking services through technology are important. Japanese ability may be useful for internal coordination, while English may support communication across Rakuten’s international organization.

About the employer

Rakuten, Inc. is a major Japanese technology and internet services group founded in 1997 and headquartered in Tokyo. Its businesses span e-commerce, digital content, travel, fintech, telecommunications, advertising, and professional sports. Rakuten Bank, Ltd. is the group’s online banking subsidiary, providing deposits, payments, loans, cards, and other financial services through digital platforms. The company is known for its large membership ecosystem, loyalty program, and emphasis on technology-driven customer experiences. Rakuten operates internationally and brings together employees from diverse professional and cultural backgrounds. Working at Rakuten Bank can offer exposure to high-volume consumer applications, regulated financial systems, cybersecurity, and large-scale digital product development.