Demo Days
Every product team shows what it shipped this semester to a full room.
Events
There's always something happening.
Demo days, hackathons, workshops with industry engineers, recruiting events and socials. Most events are open to every Yale student, members or not.
What we run
Five kinds of events, all semester long.
Hackathons
Build something in an afternoon or a weekend, with sponsor prizes on the line.
Workshops
Hands-on sessions with engineers from companies like OpenAI.
Recruiting
Meet recruiters and engineers from our sponsors and partner companies.
Socials
Game nights, mixers, the holiday party and our end-of-year gala.
From past events
Past events
- Nov 16, 2025Catalyst Mixer: Meet, Mingle & BuildTsai CITYCatalyst
- Oct 30, 2025Mario Kart Mixer with Yale ColorStackTsai CITYMixer
- Oct 11, 2025y/cs BobathonTsai CITYHackathon
- Sep 28, 2025y/cs Orientation 2025Tsai CITYOrientation
- Sep 18, 2025The Danger of "Deploy"Tsai CITYSpeaker event
- Apr 28, 2025y/cs Gala 2025SSS 114Mixer
Never miss an event.
Add the y/cs calendar or follow us on Instagram. We post every event there first.