FullStack Engineer, TypeScript - Credit ManagementEnglish 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.

We are seeking a FullStack Engineer to rebuild the credit management system, a core product for UPSIDER. This role involves developing and maintaining scalable web applications using TypeScript, collaborating with diverse teams, and contributing to a financially impactful system.

Must-haves

5+ years of backend development experience in a statically-typed language
Practical frontend development experience
Experience with Agentic Coding tools like Claude Code, Codex, or Devin
3+ years of backend development experience in a statically-typed language (alternative path)
Practical TypeScript frontend development experience (alternative path)

Nice-to-haves

Full-stack development experience with TypeScript
Frontend development experience with React or Next.js
Ability to design scalable, maintainable, and readable architectures
Extensive experience in data modeling, database schema design, and optimization
Experience collaborating with business departments to understand domains and propose solutions

About the Company