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Job ID : 1577343 Date Updated : February 6th, 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
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