Care SaaS | New Product Launch | TypeScript x AI Development | Tech Lead Wanted to Lead Technical FoundationEnglish summary from Japanese

スリーエス株式会社

✓ Detailed

Salary

7 million yen ~

Role summaryEnglish summary from Japanese

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

Threees is launching a new home-visit care support SaaS product in FY2026 and is seeking a Tech Lead to build its technical foundation. This role involves leading new product launches, improving existing products, and enhancing development productivity and organization.

Must-haves

5+ years of web application development experience
Development experience using TypeScript / React
Experience in all phases from design to implementation and review
Development experience utilizing AI agents
Ability to commute to Tokyo office 2-4 days per week
Japanese proficiency level N1 or higher

Nice-to-haves

Technical Lead experience
Experience introducing/improving CI/CD and automated testing
Experience improving development productivity
Experience driving development in collaboration with Product Managers and other teams
Development experience in a small team environment

Tech stack

TypeScript

About the Company

スリーエス株式会社

Posted6/9/2026

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