David Zhang (dzlightning123)

New York, New York, United States

DevFest 2026

New York, NY, USA

DevFest is an annual hackathon held at Columbia University.

$5,625 in prizes
Feb 7 – 8, 2026
564 participants

Cal Hacks 12.0

San Francisco, CA, USA

This year's Cal Hacks is co-hosted by Claude, Fetch AI, AppLovin, and Amazon's Annapurna Labs! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas.

$58,100 in prizes
Oct 24 – 26, 2025
2165 participants