B241. FullStack Engineer, TypeScript - White Label / User PlatformEnglish summary from Japanese

株式会社 UPSIDER

✓ Detailed

Salary

当社規定による。賞与あり(半期に一回、グレードや実績によって支給)

Location

フルリモートワーク東京オフィス

Job Type

Full-time

Work Style

フルフレックス、フルリモート、土日祝日休み、有給休暇あり、年末年始、夏季休暇、出産育児休暇制度あり

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Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

Join a new venture within UPSIDER to build a global financial platform supporting innovators. This role involves developing and launching a new financial service from the ground up, contributing to its growth and evolution.

Must-haves

3+ years of professional experience in web application development
Backend development experience with a statically-typed language
Frontend development experience with React or Next.js
Ability to translate requirements into features and designs in collaboration with Product Managers and business stakeholders
Practical experience with Agentic Coding using tools like Claude Code, Codex, or Devin

Nice-to-haves

Design and implementation skills considering extensibility, robustness, scalability, and testability
Experience operating web services or applications
Experience leading or managing teams, projects, or technical decisions
Development experience in financial or accounting systems
Experience with complex and challenging system requirements such as payments

About the Company