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Senior Java Engineering Lead | E-Commerce Platform

Tokyo 23 Wards Temporary ¥6,000,000 - ¥8,000,000 per year Foreign Multinational View Job Description
Join a high-impact engineering team responsible for developing and enhancing large-scale e-commerce platforms serving millions of users. This role combines hands-on backend development, technical leadership, stakeholder management, and architectural decision-making across complex systems.
  • Lead technical strategy for a large-scale digital platform
  • Own end-to-end development in a global engineering team

About Our Client

Our client is a leading digital commerce and technology organization operating large-scale online platforms across Japan. The business continues to invest heavily in engineering excellence, cloud technologies, AI-powered development tools, and innovative customer experiences.

Job Description

  • Lead backend development projects from planning and requirements definition through deployment
  • Collaborate with product managers, frontend engineers, QA teams, and business stakeholders to define solutions and priorities
  • Design, develop, and maintain scalable backend services, APIs, and batch processing systems
  • Drive architectural decisions with a focus on performance, security, scalability, and maintainability
  • Produce technical specifications, system design documentation, and implementation plans
  • Conduct code reviews and promote engineering best practices across the team
  • Mentor engineers and contribute to technical growth within the organization
  • Lead technical discussions and present proposals to both technical and non-technical stakeholders
  • Improve development processes, delivery efficiency, and system reliability
  • Support the evolution of a modern microservices environment and cloud-native architecture

Technology Environment

  • Java 21
  • Spring Boot 3
  • Spring Web MVC / Spring Batch
  • Kubernetes
  • Google Cloud Platform
  • Cloud Spanner
  • Redis
  • Apache Kafka
  • Docker
  • CI/CD Pipelines

The Successful Applicant

Required Experience

  • 5+ years of professional backend development experience
  • 3+ years of team leadership or people management experience
  • Proven experience delivering software projects from requirements gathering through production release
  • Experience coordinating with cross-functional teams including Product, Frontend, and QA
  • Business-level English communication skills

Technical Requirements

  • Strong expertise in Java and Spring Boot within large-scale environments
  • Extensive experience designing RESTful APIs and implementing authentication and authorization mechanisms
  • Advanced knowledge of relational databases such as MySQL and PostgreSQL
  • Experience with container technologies, Docker, and CI/CD environments
  • Strong understanding of secure software development practices and web security principles
  • Experience conducting code reviews and establishing development standards

Preferred Qualifications

  • Agile or Scrum delivery experience
  • Experience acting as a technical lead for stakeholder communication
  • Strong system design and microservices architecture knowledge
  • Experience with AWS, Azure, or GCP
  • Expertise in performance optimization and scalability improvements
  • Knowledge of modern architectural principles including DDD, SOLID, and Clean Architecture
  • Exposure to e-commerce platforms and business processes

What's on Offer

  • Opportunity to lead technical initiatives with meaningful business impact
  • Exposure to high-traffic, large-scale consumer platforms
  • End-to-end ownership from planning through production deployment
  • Collaborative international engineering environment
  • Access to AI-powered engineering tools and modern development practices
  • Opportunity to mentor engineers and influence technical direction
  • Work with modern cloud-native technologies and distributed systems
  • Clear visibility with technical and business stakeholders



Contact
Serena Wu
Quote job ref
JN-082026-7083489
Phone number
+81 3 6627 6137

Job summary

Function
IT
Specialisation
Programming / Development
Specialisation
Technology & Telecoms
Location
Tokyo 23 Wards
Job Type
Temporary
Consultant name
Serena Wu
Consultant phone
+81 3 6627 6137
Job Reference
JN-082026-7083489
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.