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Backend Engineering Lead for Large-Scale E‑Commerce Systems

Tokyo 23 Wards Temporary ¥6,000,000 - ¥8,000,000 per year Foreign Multinational View Job Description
This role leads backend architecture, development, and technical direction for large-scale, high‑traffic e-commerce services. You will shape system scalability, performance and reliability while guiding complex projects and engineering teams.
  • Lead backend architecture for high‑traffic consumer platforms
  • Drive technical strategy and mentor senior engineers

About Our Client

A major digital services provider operating one of Japan's largest consumer-facing e‑commerce platforms. The engineering environment emphasizes scalability, data‑driven improvements and stable operation during high‑traffic national campaigns.

Job Description

  • Lead backend system architecture and make technical decisions for high-traffic services
  • Translate business requirements into high‑quality, timely feature delivery
  • Drive project execution across design, development, testing and release
  • Develop and operate backend features using Java/Spring Boot and REST APIs
  • Oversee service monitoring, production troubleshooting and reporting
  • Handle operational tasks including inquiry management, investigations and maintenance
  • Collaborate with cross-functional teams to ensure scalable and maintainable system evolution



The Successful Applicant

Must-Have:

  • 5+ years as a technical lead for high‑traffic web systems
  • Proven experience designing scalable, maintainable system architecture
  • Experience with production monitoring, troubleshooting and incident reporting
  • 5+ years of Java / Spring Boot backend development
  • Strong REST API design and development skills; JUnit and code review experience
  • Experience with Oracle or MySQL
  • Experience using Tomcat or WebLogic
  • Linux, Git and Gradle proficiency
  • CI/CD experience using Jenkins or similar tools
  • Hands-on experience with Docker, Kubernetes and container architectures
  • Business-level English communication

Nice to Have:

  • Performance, load or stress testing
  • Experience with Redis, Kafka, Elasticsearch, Grafana or Kibana
  • 3+ years of PHP development with any framework
  • Experience building Kubernetes environments
  • CKA or CKAD certification

What's on Offer

  • Architect mission-critical systems used by tens of millions of users
  • Strong influence over long‑term technical strategy
  • Exposure to modern infrastructure and container-based platforms
  • High-impact engineering challenges in a fast-paced environment



Contact
Serena Wu
Quote job ref
JN-032026-6977340
Phone number
+81 3 6627 6137

Job summary

Function
IT
Specialisation
Programming / Development
Specialisation
Retail
Location
Tokyo 23 Wards
Job Type
Temporary
Consultant name
Serena Wu
Consultant phone
+81 3 6627 6137
Job Reference
JN-032026-6977340
Company Type
Foreign Multinational

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.