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Senior Java Backend Engineer @Leading IT in Tokyo ~8M

Tokyo 23 Wards Temporary ¥6,000,000 - ¥8,000,000 per year Foreign Multinational Work from Home or Hybrid View Job Description
We are hiring a Senior Java Backend Engineer (Tech Lead level) to design, develop, and operate large-scale web backend systems for a major e-commerce marketplace. You will lead system design decisions, guide engineering teams, and ensure high availability during peak traffic events.
  • Work on one of the largest high-traffic e-commerce platforms in Japan
  • Senior-level, architecture-driven role offering strong technical ownership

About Our Client

The client operates Japan's largest online shopping marketplace, serving tens of millions of consumers. Engineers work in a highly challenging environment where performance optimization, system resilience, and continuous improvement are essential.

Job Description

  • Understand business priorities and deliver high-quality backend services under tight schedules
  • Lead backend architecture design for high-traffic web systems
  • Make technical decisions considering scalability, maintainability, and long-term service growth
  • Lead design, development, testing, and release of new and existing backend features
  • Guide engineering teams and resolve complex technical issues



The Successful Applicant

  • Proven experience as a Technical Lead for high-traffic web systems
  • 5+ years of Java backend development experience (Java + Spring Boot)
  • Strong experience in REST API design, development, JUnit testing, and code reviews
  • Production monitoring and troubleshooting experience
  • Experience with Oracle or MySQL
  • Experience using Tomcat or WebLogic
  • Hands-on experience with Linux, Git, Gradle
  • CI/CD experience using Jenkins or similar tools
  • Experience using Docker and Kubernetes in system development
  • Business-level English communication skills



What's on Offer

  • Compensation: Up to ~8M JPY (depending on experience)
  • Long-term contract (initial 2 months, then 3-month renewals)
  • Senior, architecture-focused Java role
  • High-impact system used by millions of users
  • Weekends & holidays off
  • Working hours: 9:00 - 17:30



Contact
Hikari Takamura
Quote job ref
JN-102025-6871373
Phone number
+813 6832 8903

Job summary

Function
IT
Specialisation
Programming / Development
Specialisation
Technology & Telecoms
Location
Tokyo 23 Wards
Job Type
Temporary
Consultant name
Hikari Takamura
Consultant phone
+813 6832 8903
Job Reference
JN-102025-6871373
Company Type
Foreign Multinational
Work from Home
Work from Home or Hybrid

Diversity & Inclusion at Michael Page

We don't just accept difference - we celebrate it. We encourage applicants from all backgrounds to apply for this role and are committed to building inclusive, diverse workplaces where everyone can thrive. If you require any support or reasonable adjustments during the recruitment process, please let us know.