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Senior Front-End Developer for Large-Scale E‑Commerce Platforms
| Location | Tokyo - 23 Wards |
| Job Type | Temporary |
| Salary | 6 million yen ~ 8 million yen |
Job Description
This role focuses on developing and operating front-end services for a large-scale online marketplace used by a broad consumer base. You will contribute across the full development lifecycle while improving performance, quality, and user experience.
Client Details
Our client is a large multinational e-commerce and digital services group operating one of Japan's most established online marketplace platforms. The organization is technology-driven, with strong investment in scalable systems that support both consumers and business partners.
Description
- Develop and operate consumer-facing web services using modern front-end technologies (JavaScript, HTML, CSS)
- Participate in system design, development, testing, and release across multiple projects
- Improve front-end performance, quality, and maintainability
- Handle operational tasks including inquiries, investigation, and issue resolution from consumers and merchants
- Collaborate with cross-functional global teams using English as the working language
- Create design documents, test cases, and technical documentation
- Implement and maintain unit and integration tests throughout the development lifecycle
Job Offer
- Weekends and public holidays off
- English-speaking, international engineering environment
- Opportunity to work on a high-traffic, large-scale consumer platform
To apply online please click the 'Apply' button below. For a confidential discussion about this role please contact Serena Wu on +81 3 6627 6137.
General Requirements
| Minimum Experience Level | No experience |
| Career Level | Mid Career |
| Minimum English Level | Fluent |
| Minimum Japanese Level | Basic |
| Minimum Education Level | Bachelor's Degree |
| Visa Status | Permission to work in Japan required |
Required Skills
Required Skills & Experience
- 3+ years of front-end development experience using JavaScript, HTML, and CSS
- Hands-on experience with React.js and/or Node.js
- Solid understanding of front-end performance optimization
- Working knowledge of web security fundamentals
- Experience in system design and technical documentation
- Experience with unit testing and integration testing
- Business-level English communication skills
- Experience using ESLint
- JavaScript unit testing experience (Jest, Intern, WDIO, etc.)
- Ability to design front-end architecture
- Experience in system operations, investigation, and improvement
- Familiarity with Git
- Proactive mindset with the ability to identify issues and drive solutions independently
Job Location
- Tokyo - 23 Wards
Work Conditions
| Job Type | Temporary |
| Salary | 6 million yen ~ 8 million yen |
| Industry | Software |
