English summary for screening — check the original posting before applying.
Seeking a Backend Engineer to develop LINE bots and web applications for services like PokeSapo. You will focus on Python/Flask backend development, improving existing features and building new ones within a complex system. The team is actively promoting "AI-driven development" using tools like Claude Code.
Must-haves
- 3+ years of experience with Python/Flask/FastAPI frameworks
- Experience with TypeScript/JavaScript or willingness to engage in frontend specification development
- Must be motivated to proactively learn and adapt
- Must be comfortable with the startup environment
Nice-to-haves
- Experience formulating collaboration specifications with the frontend
- Development experience with AI tools (Claude Code, etc.) or strong interest in AI-driven development
- Experience creating LINE bots using the LINE Messaging API
- Comfortable with or have practical experience in QA tasks (approx. 30% of work)
Tech stack
PythonFlaskLINE LoginLINE Messaging APIAzure OpenAI APIVimeo APIAWSAzureMongoDBRedisNext.jsReact.jsTypeScriptGitHubSlackClickUpNotion
Work style
Full remote possible. Location: Freundt Mita, 2-14-5 Mita, Minato-ku, Tokyo, Room 606. Discretionary labor system.
Other notes
Estimated Annual Salary: ¥5,000,000 - ¥9,000,000. Probationary Period: 3 months. Benefits include social insurance, book purchase subsidy, commuting allowance, and casual dress code.