Application Engineer - Payment System Department, System Operations Division, Rakuten Card Co., Ltd. (Secondment)

Role summary

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This role supports application systems used by Rakuten Card’s payment business, including system operation, monitoring, incident response, troubleshooting, maintenance, and coordination with development and infrastructure teams. Candidates are generally expected to have experience operating or maintaining business-critical applications, knowledge of databases, servers, logs, and troubleshooting procedures, and an understanding of software development or IT service management. Experience with payment systems, financial services, large-scale platforms, cloud environments, or automation is advantageous. The role requires strong communication skills because the successful candidate will work with Rakuten Card and Rakuten teams, vendors, and other stakeholders. Reliability, security awareness, structured problem-solving, and the ability to respond calmly to incidents are particularly important. Japanese communication ability is likely essential, with English useful in the international Rakuten environment.

About the employer

Rakuten Group, Inc. is a major Japanese technology and internet company headquartered in Tokyo. Founded in 1997, it operates a broad ecosystem covering e-commerce, online marketplaces, digital content, travel, fintech, credit cards, banking, securities, mobile communications, and advertising. Rakuten Card Co., Ltd. is one of the group’s key financial businesses and provides credit cards, payment services, and related consumer financial products to millions of customers. The company uses the Rakuten membership and points ecosystem to connect its services and encourage customer engagement. Its technology teams manage high-volume, security-sensitive platforms that require continuous availability and careful operational control. Employees typically work in a large, structured corporate environment involving cross-functional collaboration, internal stakeholders, and external technology partners. Rakuten’s international workforce also creates opportunities to work across cultures and, depending on the team, in English as well as Japanese.