Hi,I'mChoYin

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Background

An AI engineering leader, cofounder, and University of Toronto lecturer building things people actually use. Currently the cofounder of XY SPACE, where I help companies design and deploy AI systems that actually work.

At Verto Health, I led a team of over 20 developers, fostering their growth while shipping complex healthcare software. That passion for teaching was recognized by the University of Toronto, where I became the youngest sessional lecturer promoted in the CMS department.

My technical work focuses on practical applications of artificial intelligence, and has resulted in two co-authored patents and two competitive AI awards.

Selected Work

A curated set of projects and awards spanning healthcare AI, developer tools, and shipped products.

01 / Case Study
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lotsotravel

eSIM convenience store

Lovable Shipped S1 · Top 10

02 / Project
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saasmail

Centralized per-customer inbox for SaaS teams, self-hosted on Cloudflare Workers

Open Source

03 / Project
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opensigma

Free, open-source Stripe Sigma & Data Pipeline replacement on Cloudflare D1

Open Source

04 / Project
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nitrogen

Carbon.now.sh for AI coding — turn Claude, Codex, and Gemini CLI sessions into shareable images

Open Source

05 / Award
Youth Mental Health Narratives preview

Youth Mental Health Narratives

Discovering novel variables for NVDRS data

06 / Project
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cite-met

SEO & AEO visibility for vibecoded sites

Teaching
CSCD01 · University of Toronto

Engineering Large Software Systems

Software architecture building blocks, non-functional requirements, and system design.

Visit Course Site →
CSCC09 · University of Toronto

Programming on the Web

Building scalable, maintainable full-stack applications with modern web technologies.

Visit Course Site →