Bilingual Backend Engineering Lead, E-Commerce Platform

Experience & Leadership

• 5+ years of professional backend development experience.
• 3+ years of technical leadership, team lead, or people management experience.
• Proven experience delivering complex software projects from planning through production release.
• Track record of working with cross-functional teams including Product, Frontend, QA, and Business stakeholders.

Language Skills

• Business-level Japanese and English communication skills.
• Ability to participate in stakeholder discussions, requirement gathering, and technical presentations in both languages.

Technical Skills

• Strong expertise in Java and Spring Boot within large-scale production environments.
• Deep understanding of RESTful API design, authentication, and authorization.
• Advanced experience with relational databases such as MySQL or PostgreSQL, including schema design, optimization, and transaction management.
• Hands-on experience with Docker, containerized environments, and CI/CD pipelines.
• Strong knowledge of software development best practices and code review processes.
• Solid understanding of secure software development, web security principles, and risk mitigation.
• Experience designing scalable, reliable distributed systems and microservices architectures.

Preferred Qualifications

• Agile/Scrum delivery experience.
• Experience acting as a technical point of contact for stakeholders.
• Background creating RFCs, technical specifications, or architecture documentation.
• Familiarity with tools such as Jira, Asana, Linear, or Notion.
• Experience partnering with Product teams on roadmap planning.
• Understanding of e-commerce business models and customer journeys.
• Experience with cloud platforms such as AWS, Azure, or GCP.
• Knowledge of modern architecture patterns including DDD, Clean Architecture, and SOLID principles.