English summary for screening — check the original posting before applying.
Develop internal AI agents that support management decisions by collecting and integrating internal and external information. This role involves end-to-end development, from requirements definition and design to implementation, testing, and infrastructure management.
Must-haves
- Experience in the full cycle of web application development: design, programming, and infrastructure (cloud) construction.
- Experience with AI models (Gemini API, OpenAI API, Claude API) and AI SDK (Vercel).
- Proficiency in TypeScript, React, and React Router.
- Experience with Cloudflare (Workers/D1/R2/BrowserRendering/Tunnel), GCP (Vertex AI Search/CloudStorage/BigQuery), Docker, and Linux.
- Experience with automation tools like n8n and Dify.
- Familiarity with GitHub and Claude Code.
Nice-to-haves
- Experience with Python and Next.js.
- Experience with PostgreSQL and MySQL.
- Familiarity with front-end libraries such as HeroUI, Tailwind CSS, xyflow (React Flow), and assistant-ui.
- Experience with Drizzle ORM, Puppeteer, Firecrawl, Better Auth, Playwright, and Cursor.
- Cloud-related certifications are a plus.
Tech stack
Gemini APIOpenAI APIClaude APIVercel AI SDKTypeScriptReactReact RouterCloudflare WorkersCloudflare D1Cloudflare R2Cloudflare BrowserRenderingCloudflare TunnelGCP Vertex AI SearchGCP CloudStorageGCP BigQueryDockerLinuxn8nDifyGitHubClaude CodePythonNext.jsPostgreSQLMySQLHeroUITailwind CSS
Work style
Hybrid work (not fully remote, requires 2+ days onsite). Must be onsite during the trial period. Location: Tokyo.
Other notes
Annual salary range: 6,000,000 JPY - 9,000,000 JPY.