楽天グループ株式会社：1029590　Senior Software Engineer, Point Platform Group – Incentive Platform Department (INPD)

会社名

楽天グループ株式会社

会社概要

未来を信じ、より良い明日を創っていく。
イノベーションを通じて、人々と社会をエンパワーメントする。私たちは、そんな想いを大切に世界の人々に喜びと楽しさを届けます。
楽天は、E コマース、FinTech、デジタルコンテンツ、通信など、70 を超えるサービスを展開し、世界10 億以上のユーザーに利用されています。
これら様々なサービスを、楽天会員を中心としたメンバーシップを軸に有機的に結び付け、他にはない独自の「楽天エコシステム」を形成しています。ダイバーシティ推進は、楽天にとって最優先の企業戦略のひとつです。従業員の出身は70カ国・地域以上。世界中からユニークで多様な文化的背景や視点を持つ優秀な人材が集まり、イノベーションの原動力になっています。社内カフェテリアにはベジタリアン、ハラル対応のメニューを用意。礼拝所（Prayer room）もあります。
また、仕事と育児の両立支援や、障がい者雇用・活躍促進も積極的に推進。社内のLGBT（※1）当事者やアライ（※2）に対して、情報共有やサポート体制の強化も進めています。誰もが自分らしく力を最大限発揮して働ける。それが楽天のダイバーシティです。

70を超えるサービスを提供し、世界30カ国にサービス展開拠点を持ち、従業員の出身国・地域数は100を超え、オープンポジション制度を活用して多様なキャリアを描くことができる点も魅力です。
フレックスタイム制度、事情に応じたリモートワークの活用が可能です。本社には託児所やフィットネスジム、三食無料で利用可能なカフェテリアが併設されるなど、社員を支える環境が整備されています。

ポジション

1029590　Senior Software Engineer, Point Platform Group - Incentive Platform Department (INPD)

仕事内容

Department Overview
By joining our TECH community, the IT powerhouse of the Rakuten Group, you will be part of a diverse global team and play a central role in our technology and innovation. Aligning with TECH’s innovative nature, our Incentive Platform Department (INPD) is thinking big: building scalable platforms that powers the Rakuten Ecosystem worldwide.
And we in Point Platform Group, under Loyalty Platform Section, are responsible for developing and operating Rakuten Point Platform, the most popular loyalty program in Japan. Through Rakuten Point, millions of users are connected everyday with popular Rakuten services such as EC, Bank, Card, as well as to thousands of convenient stores all over Japan. However, our mission doesn’t stop there, Rakuten point now is expanding in all over the world from Europe to the Americas to APAC region, and our ongoing mission is to connect it all under single global platform.
By the time you finish reading this, hundreds of thousands of points transactions have been processed through our platform! Interested in hearing more? Come talk with us.

Position:
Why We Hire
We are looking for a Senior Software Engineer to join our team and contribute to the development of faster and more resilient web services.
In this role, you will partner with Product Managers to design and build robust, globally scalable web applications. You will be responsible for delivering high-quality code and reliable services, while contributing to continuous improvement in both our systems and processes.
This position includes opportunities to mentor junior engineers and grow into technical leadership roles.
　
Position Details
- Design and develop large-scale backend systems as a key member of our agile development team
- Demonstrate a commitment to excellence by delivering high-quality code, robust unit tests, and thorough documentation
- Actively research and integrate modern technologies and methodologies to optimize development productivity and efficiency
- Drive continuous quality improvement through systematic refactoring, collaborative peer reviews, and dedicated mentorship of junior engineers
- Ensure the safe and reliable delivery and ongoing operation of applications throughout their lifecycle, from development to production
- Utilize artificial intelligence and machine learning advancements to significantly enhance development productivity and ensure the highest levels of application performance
　

Tech Stack
- Programming languages: Kotlin, Java
- Platform: Google Cloud, internal private cloud
- Databases: Cassandra, TiDB, Redis, MySQL
- Application Framework: Vertx, Quarkus
- Batch and Streaming: Kafka, Spark
- Monitoring: ELK
- Others: GitHub Actions, Continuous Integrations (CI/CD), Kubernetes

求める経験・スキル

Mandatory Qualifications:
Education
- Bachelor's degree (BS) in Computer Science, Engineering, or a related field
Experience
- At least 7+ years of working experience in software engineering with a strong foundation in building scalable, distributed systems
Technical Skills
- Demonstrated ability to mentor junior engineers, contribute to technical decision-making, and collaborate effectively across cross-functional teams
- Strong experience in code reviews, technical documentation, and following software engineering best practices
- Strong experience with CI/CD pipelines, automated testing, and a commitment to maintaining high software quality standards
- Ability to support production systems, including incident management and root cause analysis for issue resolution
Soft Skills
- Excellent communication skills, with the ability to effectively collaborate with cross-functional teams and business stakeholders
Language Skills
- Business-level fluency in English is required
　
Desired Qualifications:
- MS in Computer Science or a related technical discipline
- 1-2 years of informal team leadership or mentoring experience
- Experience in application deployment and operation on public cloud platforms (e.g., AWS, Azure, GCP)
- Experience working in distributed or remote engineering teams
- Hands-on experience with system architecture design for medium to large-scale applications
- Experience with load testing and troubleshooting issues related to high-volume traffic
- Practical experience with microservices architecture and distributed systems
- Experience with AI/ML projects or utilizing AI tools to improve team productivity (e.g., code completion, automated testing)
- Track record of contributing to technical decision-making in previous roles