Inspiration

I'm attending Build Week alone, and my goal isn't just to show up but also to find people I can build and ship real products with long after the event ends. A room full of AI builders, engineers, and founders is the perfect place to find future co-founders and collaborators. But with 500+ attendees across 5 days, how do you find the right people? I built BuilderMatch so nobody has to leave that to chance.

What it does

BuilderMatch lets AABW 2026 attendees create a builder profile (project, AI stack, skills offered/needed) and swipe through other builders ranked by a 10-signal compatibility engine. Mutual interest creates a match, unlocking real-time chat. Shareable profile links with QR codes bridge the digital and in-person experience.

How we built it

React 19 + TypeScript frontend with Zustand for state, Supabase for the backend (PostgreSQL, anonymous auth, real-time subscriptions), and Vercel for deployment. The match engine runs client-side, scoring candidates across project domain, skill complementarity, AI stack overlap, schedule availability, and 6 other weighted signals. The UI is wrapped in a phone frame on desktop and goes full-screen on mobile for a native app feel.

Challenges we ran into

Designing zero-friction onboarding that captures enough profile data (8 steps, 35+ fields) without feeling like a form. Preventing duplicate matches when both users swipe simultaneously from different devices. Making real-time messaging work reliably with Supabase's realtime subscriptions across anonymous sessions that have no email or password.

Accomplishments that we're proud of

The matching algorithm genuinely surfaces relevant people, not just check if two builders use the same tools, it finds complementary pairs (you need a designer, they need a backend engineer). The entire app works with zero signup friction: enter an event code, build your profile, start swiping. No email, no password, no OAuth. Session persists across reloads automatically.

What we learned

Anonymous auth is powerful for event apps — zero signup friction while still maintaining persistent sessions and row-level security. Client-side matching keeps the architecture simple and the scoring logic transparent. Supabase's real-time subscriptions made live messaging surprisingly straightforward to implement.

What's next for BuilderMatch

Post-event follow-up features so connections don't die after the conference. Team formation for multi-person projects — not just 1:1 matches but assembling full hackathon squads. Integration with event platforms for live session check-ins and schedule-aware matching. And expanding beyond AABW to other builder events and hackathons.

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