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Backend Engineer - BSS Development Department (BSDD)

Rakuten

Rakuten

Software Engineering
Tokyo, Japan
Posted on Apr 12, 2025

Job Description:

Department Overview
The mission of BSS Development Department (BSDD) is to accelerate our contribution to the telecommunications business by providing an innovative, high-quality and stable ecosystemized B2C BSS platform. MNO business just started in 2020. 10 million subs are coming soon. We are still expanding rapidly every year. Let's walk together to become the No.1 telecom operator.

Overall Position Details

We are looking for an experienced and passionate Backend Engineer to join our team. As a Backend Engineer, you will be responsible for designing, developing, and maintaining our Java-based microservices architecture. You will work closely with frontend developers, product managers, and other team members to ensure our applications are efficient, reliable, and scalable.


- Design architecture according to requirements.
- Develop and maintain microservices and APIs.
- Take responsibility for code quality, monitoring, troubleshooting, maintenance, bug-fixing, and improving existing software as needed.
- Deliver secure, reusable, and maintainable high-quality code based on specifications.
- Create and maintain technical documentation.
- Collaborate with the team to deliver features with quality and speed.
- Work with Product Managers and Designers to ensure excellent UI/UX.

Mandatory Qualifications:
- Bachelor's Degree (BS) in Computer Science or in related fields, or equivalent education and experience (4 years+)
- Experience in Java development (5 years+)
- Experience in Linux operating system and command line tools. (5 years+)
- Experience in Restful-API development. (3 years+)
- Experience in React(redux) development. (2 years+)
- Experience with version control tools such as Git. (5 years+)
- Experience in CI/CD automation of service delivery (Jenkins/Ansible, etc.). (3 years+)
- Experience in Docker container technology (2 years+)
- Experience in Kubernetes (2 years+)
- Experience in cloud computing platforms, such as AWS, Azure or Google Cloud, etc. (3 years+)
- Fluent English communication skills and a certain level of Japanese reading and writing skills (JLPT N3+)

Desired Qualifications:

- Experience with monitoring and alerting systems for performance optimization.
- Strong experience in designing and implementing high availability architectures.
- Automated scaling and load balancing technology to cope with high traffic and concurrent access.
- Awareness and practice of security measures.
- Experience in JavaScript/Typescript and React/Vue/Angular
Other Details
- Work Location: Tokyo


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Languages:

English (Overall - 3 - Advanced), Japanese (Writing - 2 - Intermediate)