Site Reliability Engineer : Service Operation Department, System Operations Division, Rakuten Card Co., Ltd. (Secondment)

Role summary

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This Site Reliability Engineer role supports the operation and improvement of Rakuten Card’s systems through the Service Operation Department. The position typically requires experience with Linux, cloud infrastructure, monitoring, automation, scripting, incident response, and troubleshooting large-scale services. Familiarity with Kubernetes, databases, CI/CD, networking, and security is valuable. The successful candidate is expected to improve system reliability, availability, performance, and operational efficiency; participate in on-call or incident-management activities; document procedures; and work closely with development and business teams. Strong communication, ownership, problem-solving ability, and a continuous-improvement mindset are important. Experience in financial services or highly available production environments would be an advantage.

About the employer

Rakuten is a major Japanese technology and internet-services group founded in Tokyo in 1997. Its businesses span e-commerce, fintech, mobile communications, digital content, travel, advertising, and professional sports. Rakuten Card, part of the group’s fintech operations, provides credit cards, payment services, and related financial products to millions of customers. The company operates large, customer-facing platforms and places strong emphasis on technology, data, automation, and service reliability. Rakuten has an international workforce and commonly uses English in cross-border technical and business collaboration, while Japanese remains important for many domestic roles. Employees may work in a fast-moving environment where teams are encouraged to take ownership, improve existing services, and develop new products. The company’s broad ecosystem offers opportunities to work across commerce, finance, telecommunications, and digital infrastructure.