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Full-stack Java Engineer(Middle Level)-Backoffice Business Support Section,Business Support Development Department(BSD)

Rakuten.com

Office

Rakuten Crimson House, Japan

Full Time

Job Description:

Department Overview

Rakuten Group's mission is to "Empower people and society through innovation".

Domestically and internationally, Rakuten provides a wide range of services, with e-commerce at its core.

These services include internet services such as travel, digital content, and communications; FinTech (financial) services such as credit cards, banking, securities, insurance, and electronic money; and even professional sports.

The Business Support Development Department (BSD) plays a crucial role in providing system support for various operations between users, clients, and Rakuten businesses. Our department provides diverse services across three main areas: DATA, Business Support/Accounting, and CRM. We strive to ensure the highest quality standards in system delivery and support while pursuing business process optimization and efficiency. Our team sets goals, monitors continuously, and evaluates for the quality at services in BSD. And deliver quality that exceeds user expectations through talent development and implementing improvement measures as needed.

As an essential division of Commerce & Marketing Company, we provide a wide variety of external and internal applications for supporting Rakuten Ichiba's business. Currently, we are expanding our service to support many other businesses under Commerce & Marketing Company.

Some Examples

  • Web service for Ichiba shop open for both Japan and Oversea.
  • Service for controlling Ichiba shop item display.
  • Merchant information management system.
  • Business process management system.

Our various services are currently powered by Java, PHP, JavaScript, SpringBoot, SpringCloud, React, Redux, MySQL, Oracle, Salesforce, Pega, etc. We always encourage adopting new technologies to enhance our services, like Kafka, container technologies(Docker, Kubernetes), microservice architecture, etc.

Our development teams are divided between Tokyo and Osaka. So you can choose your desired work location.

Position:

Why We Hire

Rakuten has many businesses process management and contract management works on the business side. We are developing a platform to standardize the business process. Process management has many activities such as merchant opening process, changing shop information, contract management, etc. We are creating applications to support these activities, aiming to improve business efficiency and standardize the process to make it easy to expand to Rakuten’s other businesses. We are looking for highly skilled Java-based web app developers to build web application platforms for external and internal business use.

Position Details

As Full-stack Java Engineer, you will be in charge of developing, enhancing, and maintaining the applications. The most challenging part of this project is dynamic and complex business workflows, and continuous improvements as the business keeps updating and integrating with other internal systems.

Responsibilities

  • Analyzing users' requirements and providing system solutions.
  • Defining application objectives and functions.
  • Create end-to-end systems and APIs - design, document, develop, test, deploy and maintain them.
  • Debugging and resolving technical problems.
  • Collaborate with other team and cross-team members effectively.
  • Consider the future of our services and continue to improve them.

Mandatory Qualifications:

  • Extensive experience in Java development (3+ years)
  • Deep understanding and practical experience with the Spring Framework
  • Proficiency in modern frontend development, including TypeScript/JavaScript and React
  • Professional expertise in database design and SQL
  • Experience in designing and implementing RESTful APIs with consideration for scalability, security, and maintainability
  • Practical experience utilizing container technologies (Docker, Kubernetes)
  • Excellent technical design skills and problem-solving abilities
  • Communication skills that energize the team, along with an open-minded and collaborative spirit
  • Language: Japanese Fluent/English Business level

Desired Qualifications:

  • Practical experience with Agile development methodologies (Scrum, Kanban etc.)
  • Experience in building and operating automated testing and CI/CD environments
  • Development experience using message queuing systems (Kafka or RabbitMQ etc.)
  • Experience in system building and operation utilizing cloud platforms (Azure, AWS, GCP etc.)
  • Development and operation experience in Unix/Linux environments, including shell scripting
  • Ownership that enables autonomous action

Other Information:

Additional information on Location

Tokyo Or Osaka

Additional information on English Qualification

TOEIC score of 800 or higher

#engineer #applicationsengineer #commerce #RakutenIchiba #Java

Languages:

English (Overall - 3 - Advanced), Japanese (Overall - 3 - Advanced)

Full-stack Java Engineer(Middle Level)-Backoffice Business Support Section,Business Support Development Department(BSD)

Office

Rakuten Crimson House, Japan

Full Time

September 4, 2025

company logo

Rakuten

Rakuten