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发布于 2026-10-07 英文原文

后端工程师

ECマーケットプレイス開発部 モール1課:楽天市場 シニアバックエンドエンジニア(ECMPD)

楽天グループ

职种工程 雇用形态—
工作地点日本 薪资面议

职位概要

乐天集团乐天商业与营销公司旗下的EC市场开发部门(ECMPD)负责开发和增强支持核心业务乐天市场的在线系统。乐天市场是日本最大的网上购物中心之一,2022年销售额达5.6万亿日元,业务逐年增长。我们致力于为购物者提供最佳的购物娱乐体验,并赋能乐天市场的合作伙伴。随着服务稳步增长,我们需要更强大、可扩展的系统以推动进一步增长,并提供最佳用户体验,因此需要更多后端工程师加入开发团队。岗位职责包括:定义需求、设计、编程、测试和部署以交付系统;与PDM、内部成员及上下游系统团队协作;监控系统稳定性和性能,优化性能,设计和维护系统架构,重构、优化和故障排除。必备资格:具备使用Java、Spring Framework、React等进行系统开发和运维的经验;具备使用Kubernetes、Docker、AWS等进行系统设计和运维的经验;具备架构领导经验,能够监督整个系统并主导设计和技术决策,考虑分层结构、领域边界、可维护性、可扩展性和可用性;具备性能工程经验,能够根据系统特性设计负载测试并识别和改进应用、中间件、缓存和数据库中的瓶颈;具备可靠性工程经验,能够预测生产环境中的风险和故障因素,并主导重大事件的分析、问题解决、根本原因分析(RCA)和防止复发;具备业务/技术转化能力,能够从业务风险和增长机会的角度解释技术问题,以促进适当的优先级排序和决策;具备问题解决能力,能够从业务目标倒推构建问题,并在不确定情况下通过假设灵活判断和调整方向以推动结果;具备全球沟通能力,能够用英语进行技术讨论、设计评审、事件响应和利益相关者协调。优先资格:具备大规模服务经验;具备EC领域经验;具备分布式系统经验;具备数据库设计与运维经验;具备可观测性经验;具备AI利用经验;具备日语沟通能力。其他信息:英语资格TOEIC 800分以上。语言:英语(整体-4-流利)。

职位描述

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é (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