Job Details

Updated 2026-04-27 Activated 2026-04-27
4M Career KK

Frontend Developer

This posting is managed by:
4M Career KK
Company Name
Company is not publicly visible

Position Details
- Define requirements, design, programming, testing, and deployment to deliver the system.
- Collaborate with PDM, internal members, and upstream/downstream system teams.
- Monitor system stability and performance, optimize performance, design and maintain system architectures, refactoring, optimization, and troubleshooting.

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

 

Join a global tech-driven powerhouse headquartered in Tokyo, with over 70 services spanning e-commerce, fintech, mobile, and digital content. Operating in 30+ countries and serving 2 billion users, foster an entrepreneurial culture built on innovation, diversity, and speed.
With English as our official language and a team from 100+ nationalities, we value open communication and global collaboration. From powering Japan’s largest online marketplace to pioneering cloud-native telecom networks, we’re creating an ecosystem where ideas scale and people thrive.
If you're passionate about building impactful products and shaping the future of digital services, this is your place to grow.(Edited)

Social Insurance
Commuting/ Transportation Allowance
Relaxation Facilities

Five-Day Workweek
Summer Holidays
Winter Holidays
Refresh Holidays
Sick Leave
Paid Holidays
Paid Holidays
Child-care Leave

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