Job Description: Department Overview EC Marketplace Development Department (ECMPD) is a tech division under Rakuten Commerce & Marketing Company of Rakuten Group, Inc. We are responsible for developing and enhancing our online system to support our core business, Rakuten Ichiba. Rakuten Ichiba is one of the largest internet shopping malls in Japan with 5.6 trillion sales in 2022 and our business is growing year on year. We aim to provide the best shopping entertainment for our shoppers and empower our partners in Rakuten Ichiba. Position: Why We Hire While this service is growing steadily, we need a more robust and scalable system to drive further growth. We are also committed to providing the best user experience possible. This requires a stronger team and higher engineering skills, and we need more Backend engineers to work with us as part of our development team. Position Details: ・Define requirements, design, programming, testing, and deployment to deliver the system. ・Collaborate with PDM, internal members, and upstream/downstream system teams. ・Monitor system stability and performance, optimize performance, design and maintain system architectures, refactoring, optimization, and troubleshooting. Mandatory Qualifications: ・System Development & Operations: Experience in system development and operations using Java, Spring Framework, React, etc. ・Cloud & Container Experience: Experience in system design and operations using Kubernetes, Docker, AWS, etc. ・Architecture Leadership: Experience in overseeing entire systems and leading design and technical decision-making with consideration for layer structures, domain boundaries, maintainability, scalability, and availability. ・Performance Engineering: Experience in designing load tests based on system characteristics and identifying/improving bottlenecks across applications, middleware, caches, and databases. ・Reliability Engineering: Experience in predicting risks and failure factors in production environments, as well as leading analysis, problem-solving, root cause analysis (RCA), and recurrence prevention for major incidents. ・Business/Technical Translation: Experience in explaining technical issues in terms of business risks and growth opportunities to facilitate appropriate prioritization and decision-making. ・Problem-Solving Skills: Experience in structuring issues by working backward from business goals, and driving results by making flexible judgments and course corrections using hypotheses, even in uncertain situations. ・Global Communication: Ability to conduct technical discussions, design reviews, incident response, and stakeholder coordination in English. Desired Qualifications: ・Large-Scale Service Experience: Experience in the design, development, and operation of high-traffic or mission-critical services. ・EC Domain Experience: Development and operations experience in the commerce domain, such as EC, marketplaces, payments, orders, inventory, or search. ・Distributed Systems Experience: Experience in system design and operations using microservices, event-driven architecture, Kafka, etc. ・Database Design & Operations: Experience in the design, performance analysis, and tuning of PostgreSQL, MySQL, Oracle, etc. ・Observability Experience: Experience in system improvement utilizing Monitoring, Tracing, and Logging. ・AI Utilization Experience: Experience in improving development efficiency or developing services by utilizing generative AI or AI development support tools. ・Japanese Communication Skills: Ability to conduct technical discussions, organize requirements, coordinate with stakeholders, or create documentation in Japanese. Others Information: Additional information on English Qualification TOEIC Score 800 or above #engineer #applicationsengineer #commerce #RakutenIchiba Languages: English (Overall - 4 - Fluent) In Japanese, Rakuten stands for ‘optimism.’ It means we believe in the future. It’s an understanding that, with the right mind-set, we can make the future better by what we do today. So we challenge ourselves to evolve, innovate and experiment, to create a better, brighter future for everyone. Today, our 70+ businesses span e-commerce, digital content, communications and fintech, bringing the joy of discovery to almost 1.3 billion members across the world. If you have any trouble logging in, please contact us here Rakuten Group, Inc.: rakuten-recruiting-info@mail.rakuten.com *Please read the Application Requirements(EN) / 募集要項(JP) before applying. Our Diversity & Inclusion Policy and Application Documents Rakuten’s corporate mission is to “contribute to society by creating value through innovation and entrepreneurship.” We foster a culture that provides equal opportunities to those who share this founding philosophy and take on the challenge to transform society, regardless of age, gender, nationality, or any other status. Diversity is one of Rakuten's core strategies and a driving force for innovation. Because of this, you are not required to submit any of the following information in order to apply for our job positions. - Gender - Age - Photo - Nationality* - Information not related to business, such as ideological beliefs, family structure, etc. * For legal compliance, we may ask you about your work eligibility. See the details

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20 Jan, 2026

rakuten.com

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