Backend Developer, Rakuten Ichiba - Mall Section No.2, EC Marketplace Development Department(ECMPD)
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 4, 2026.
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:
- Development and Operation experience of web system
- Development experience of Java with frameworks (Spring Framework, Play Framework) for more than 5 years
- Experience of Unit test with Junit
- Experience of front end technologies (HTML, CSS, Javascript)
- Experience of design and development with design pattern
- Development experience with RESTful API and GraphQL
- Experience of RDMS for more than 3 years
- Experience of version control tools like Git or SVN
- Knowledge of Web securities
- +1 year experience of web servers (Apache, nginx etc.)
- +1 year experience of Unix/Linux
- Documentation skills, including design documents and test cases
- Communication skill in English
Desired Qualifications:
- Knowledge of Container architecture (Docker, Kubernetes)
- Development experience with Caching/NoSQL technologies (Redis, kafka, MQ, memcache)
- Knowledge of CI/CD and DevOps (Jenkins, CircleCI)
- Experience of stress test or performance test
- Knowledge of system scalability and sustainability
- Experience of system operations
Others Information:
Additional information on English Qualification
TOEIC Score 800 or above
#engineer #applicationsengineer #commerce #RakutenIchiba
Languages:
English (Overall - 4 - Fluent)