Summary
✨ AI‑Generated
A frontend engineering role developing scalable user interfaces for a large online marketplace. Responsibilities include feature development, performance improvements, testing, and collaboration with product and engineering teams.
Highlights
Work on large-scale digital commerce experiences with opportunities for ownership, collaboration, and technical innovation.
Description
Compensation: ¥7M – ¥11M JPY per year
Employment Type: Full-time
Experience Level: Middle, Senior
About the Role
Our client is a leading e-commerce marketplace platform in Japan, offering one of the largest online shopping experiences in the country.
They provide a platform that connects millions of shoppers with thousands of merchants, focusing on high-quality user experience, scalability, and innovation in online commerce.
We are looking for a proactive Frontend Engineer with experience in JavaScript, HTML, CSS, and React, strong skills in performance, architecture, testing, and security, who can collaborate effectively, take ownership, and drive solutions for a large-scale e-commerce platform.
Responsibilities
Defined requirements, designed, developed, tested, and deployed frontend features for a large-scale e-commerce platformCollaborated with product managers, backend engineers, and cross-functional teamsMonitored system stability and performance, and implemented performance optimizationsImproved frontend architecture through refactoring and code optimizationTroubleshot production issues and ensured high system reliability
Technologies
JavaScript, HTML, CSS
React.js / Node.js
Git
Unit testing (Jest or similar frameworks)
Key Skills
Frontend performance optimization
Web security best practices
System design and architecture
Unit and integration testing
Collaboration in an international engineering environment
Mandatory Qualifications:
- Development experience with JS, HTML, CSS for more than 5 years (Ideally 7+ years of experience)
- Strong hands-on development experience with React.js; experience with Node.js is a plus
- Development experience with Java
- Deep understanding of frontend performance optimization
- Knowledge of Web security
- Experience of system design
- Experience of testing (Unit Test, Integration Test)
- Communication skill in English
Desired Qualifications:
- Experience with ESLint
- Experience with unit testing implementation in JavaScript (Jest, Intern, WDIO)
- Ability to design front-end architecture
- DevOps experience
- Experience of Git
- Always act in active way and lead to the solution
Language Requirements
English: FluentJapanese: Optional
Work Environment
Flexible working hours with core collaboration hoursInternational engineering team
Hybrid Position
Apply now or contact us for further information:
TG Japan Inc.
03-5775-6618
RSU1_Agt@tg-hr.com
