Backend Engineer

Date PostedMay 29, 2026LocationTokyo, JapanCompany4M Career KKSalaryJPY 6000K - JPY 10000KTypeit (pc, web, unix) - back-end engineer other job type - other job type executive - other

Job Summary

We are looking for an experienced and passionate Backend Engineer to join our team. You will be responsible for designing, developing, and maintaining our Java-based microservices architecture. You will work closely with cross-functional teams to ensure our applications are efficient, reliable, and scalable.

Responsibilities

  • Design and maintain Java-based microservices architecture.
  • Develop, troubleshoot, and optimize high-quality code.
  • Collaborate with cross-functional teams on features and UI/UX.
  • Create and maintain technical documentation.

Required Skills

  • Java (5+ years)
  • Linux & Command line tools
  • Restful-API development
  • React (redux)
  • CI/CD (Jenkins/Ansible)
  • Docker & Kubernetes
  • Cloud platforms (AWS/Azure/GCP)
  • Fluent English & Japanese (JLPT N3+)

Job Details

Position Details: - 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+). Benefits: - Social Insurance - Commuting/Transportation Allowance - Relaxation Facilities - Holidays (Five-Day Workweek, Summer, Winter, Refresh, Sick Leave, Paid Holidays, Child-care Leave).