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Browse thousands of tech jobs at Japanese startups and companies. Translated for foreign engineers.

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Jobs→アイザック株式会社→page - Software Engineer - Contract Employee

page - Software Engineer - Contract EmployeeEnglish summary from Japanese

アイザック株式会社

✓ Detailed
Salary
時給4,500円〜7,000円(※経験・スキルに応じて上限は相談可能)
Location
フルリモートワークフルリモートOK(東京都内オフィスへの出社も歓迎)
Job Type
Freelance, 副業, フリーランス
Work Style
週3日〜 / 週20時間〜OK 稼働時間帯は相談のうえ柔軟に調整可能
Apply on HERP

Role summaryEnglish summary from Japanese

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

Seeking the first dedicated engineer for a new content monetization platform for creators, launching in Summer 2026. You will be involved from the ground up, shaping the architecture and technology stack for a product aiming to compete with major services on price.

Must-haves

  • 3+ years of web application development experience using TypeScript
  • Frontend development experience with React-based frameworks
  • Backend design and development experience with RDBs (e.g., PostgreSQL)
  • Experience in a business company or experience building your own product

Nice-to-haves

  • Development experience with payment/billing systems
  • Development experience with modern TypeScript stacks
  • Experience launching a product in the 0 to 1 phase
  • Development experience with Ruby on Rails / React Native (Expo)
  • Development experience utilizing AI agents (e.g., Claude Code)

Tech stack

TanStack StartVite 8

About the Company

アイザック株式会社

Headquarters
東京都渋谷区恵比寿西1-10-11 フジワラビルディング2F
Founded
2015-12
Visit Website
Posted7/19/2026
Updated2026/07/19 11:13
Sourceherp
PostgreSQL
Drizzle
PlanetScale
GCP
Cloudflare Workers
Docker
Vercel
GitHub Actions
Slack
Notion
Figma
GitHub

Work style

Full remote OK (coming to the Tokyo office is also welcome). Part-time OK (3 days/week ~ / 20 hours/week ~). Flexible working hours can be discussed.

Other notes

Hourly wage: ¥4,500 - ¥7,000 (upper limit negotiable based on experience/skills). Contract employee. No trial period (initial contract 1-3 months).