
Hackathon Workshop - Vibe Coding by Yiyin

Saturday, September 19, 2026
3:00 PM PDT – 4:00 PM PDT
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Note: Ticket is non-refundable. As a non-profit, any remaining funds from this event will be directly reinvested into the ongoing maintenance of our organization to support the community.
Hackathon Workshop - Vibe Coding by Yiyin
About this Event
I Shipped It. Then I Learned How It Worked.
Building a real product with AI, as a complete backend beginner
A women-in-tech nonprofit needed a platform to sell event tickets. I said yes, a frontend engineer who had never built a backend, never handled payments, never deployed to the cloud. With AI writing most of the code, it shipped: real users, real money. Then things started breaking.
In this workshop:
Three real bugs from a live system: ticket counts that reset themselves, a free event with no capacity limit, confirmation emails that fail silently. One is still in production today.
The spec I didn't want to write: I wanted to start building immediately. A senior engineer insisted on a spec first. Every bug above traces back to a question that document didn't ask.
How to interrogate an AI's answers: what to ask before you accept generated code, and why a plausible answer still isn't enough.
We'll walk through the real product, the real spec docs, and the code behind each bug. You'll leave with a one-page checklist for your next AI-assisted project.