Frontend Developer Large E-commerce Marketplace Platform

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/Node.js, 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 platform

Collaborated with product managers, backend engineers, and cross-functional teams

Monitored system stability and performance, and implemented performance optimizations

Improved frontend architecture through refactoring and code optimization

Troubleshot 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 3 years

- Development experience with React.js or Node.js

- 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

Languages

English: Fluent

Japanese: Optional / a plus

Work Environment

Fast-paced, dynamic global environment with collaborative teams across multiple locations

Salary: ¥6.5M – ¥11M JPY per year

Location: Hybrid (4 days in the office, 1 day remote)

Office Location: Tokyo, Japan

Working Hours: Flexible schedule with core hours from 11:00 AM to 3:00 PM

Visa Sponsorship: Available

Language Requirement: English only

Apply now or contact us for further information: