Case study
Rental Agent Hub
LINE-first workspace that turns rental listing posts into matched leads for co-agents.
FIG.1Side project
- Role
- Solo builder
- Stack
- Next.jsMongoDBLINE LIFFS3LLM
- Result
- Matched rooms arrive in LINE instead of being searched for.
Problem
Co-agents scroll many groups for rooms that fit a client and copy listings by hand.
What I owned
Solo builder
What I built
- Wrote the product and technical docs, then built the app.
- Built LINE login, alerts, and share-to-client flows.
System shape
Next.js + MongoDB, LINE LIFF and Messaging API, scheduled collection, image pipeline to S3, and AI-assisted matching and dedupe. Written up as PRD, architecture, and ADRs before code.
What changed
Matched rooms arrive in LINE instead of being searched for.