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Cheng-Han Lin
Full-stack developer. I work on the engineering that turns large language models into products people can trust — retrieval-augmented generation, self-hosted model inference and machine-learning forecasting, together with the backend, mobile and payment infrastructure around them.
B.S. in Computer Science and Information Engineering, National Chin-Yi University of Technology, June 2026; starting the M.S. programme at the same university in September 2026. Based in Taichung, Taiwan.
Projects
HeartBox
A mental-health journalling platform built on retrieval-augmented generation, with a Random Forest emotion forecast and self-hosted open-weight model inference. Solo-built capstone, end to end across ML, backend, frontend, mobile and infrastructure.
- Django REST Framework
- React
- PostgreSQL
- ChromaDB
- scikit-learn
LapseWatch
Subscription renewal reminders over LINE, email and desktop notifications, built around a complete subscription billing flow with statutory e-invoicing (ECPay, Taiwan's e-invoice system).
- Subscription billing
- Statutory e-invoicing
- LINE Messaging API
- Chrome extension
PantryKeeper
Shared household inventory and expiry tracking, with per-member permissions, offline support, and a bulk import parser that reads free-form data pasted from Notion, Excel or Google Sheets.
- Per-member permissions
- Offline support
- Bulk import parser
Contact
Happy to talk about research, roles, or any technical detail of the projects above.