MaraMap
Turns a decade of social-media posts into an interactive map, timeline and list — a running and travel log rebuilt from a raw Facebook export.
Read case studyYu-Wen Chen (Katness) — Ottawa, Canada
Helping non-technical founders turn vibe-coded prototypes into workable MVPs.
I'm a software engineer based in Ottawa. Over six years at startups in Taiwan and Singapore, plus two years freelancing, I've taken SaaS products from nothing to MVP and out the door — across web frontend, backend, databases, and AI integration. I partner with non-technical founders to bridge the final mile of development, transforming their vibe-coded prototypes into highly robust, launch-ready MVPs that can scale and iterate rapidly.
Portfolio
-
-
Monny AI
A household cash-flow system that runs entirely on local hardware — rules parse what rules can parse, a locally-hosted LLM handles only what they can't, and no financial data ever leaves the network.
Read case study -
Well Maintained
A bilingual site for a proactive home-maintenance service, with the scheduling logic running client-side — an interactive demo, geo-aware language routing at the edge, and no backend at all.
Read case study -
Zenfolio
A unified portfolio dashboard across trading platforms — upload a screenshot of your trading history and an AI parser turns it into structured buy, sell and dividend records.
Read case study -
Vizino AI
An AI interior-design studio that replaces the chat window with a project workspace — upload a room photo, preview paint, texture and furnishing changes, and keep every prompt reusable.
Read case study
Capabilities
What I work with.
01
Frontend
05- React
- Vue
- TypeScript
- CSS
- Responsive Web Design
02
Backend & Infra
06- Nest.js
- Node.js
- Relational databases
- NoSQL
- Google Cloud Platform
- AWS
03
AI Integration
03- Claude Code
- GitHub Copilot
- Gemini
Contact