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Job ID : 1577343 Date Updated : October 18th, 2026

【Backend Engineer】Java/ Springboot

Location Tokyo - 23 Wards
Job Type Permanent Full-time
Salary 5 million yen ~ Negotiable, based on experience

Job Description

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:

  • 5 years of experience in Java/Spring Boot web application development (both Web and Batch)
  • 5 years of experience in designing and developing REST APIs, with strong proficiency in JUnit testing and code reviews
  • Experience in operating large-scale online systems and handling incident response
  • Experience with relational databases (Oracle or MySQL)
  • Hands-on experience using Tomcat or WebLogic
  • Experience in Git, Linux, and Gradle
  • Experience with CI/CD using Jenkins or other similar tools
  • Knowledge and practical experience in container architectures such as Docker and Kubernetes, applied in system development 

Desired Qualifications:

  • English communication skills (Business level at least)
  • Experience in leading design to consider overall system scalability and maintainability, and strategically guiding the future vision of services (user base expansion, new feature integration)
  • Experience in conducting Performance/Load/Stress Tests, etc.
  • Experience with Redis, Kafka, Elasticsearch, Grafana, and Kibana
  • 3+ years of experience in PHP Application development using any framework
  • Experience in environment setup using Kubernetes
  • Kubernetes certification (CKA or CKAD) obtained

General Requirements

Minimum Experience Level Over 6 years
Career Level Mid Career
Minimum English Level Business Level
Minimum Japanese Level Daily Conversation Level
Minimum Education Level Bachelor's Degree
Visa Status Permission to work in Japan required

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Permanent Full-time
Salary 5 million yen ~ Negotiable, based on experience
Holidays Saturdays, Sundays, Holidays, New Year's holidays, paid leave.
Industry Other

Job Category