- prior exit: Balto
- worked at Stripe
- studied at Princeton
- ~7 years experience
Opportunities
all opportunities ▸Internal company pages for screening and memo — not external source links.
No sourced opportunity yet — only GitHub / HN / PH / Devpost / arXiv / inbound ventures appear here (not career employers).
About
Cofounder of Balto (W19). Now leading YC Partnerships @ Stripe. Angel investing with halolabs.app. Princeton grad and two-sport D1 athlete (football/track). I love building things, learning things, and solving problems. My YC startup was acquired by Fubo (NYSE: FUBO) and now I'm leading YC partnerships at Stripe, reach out if you ever need anything - joelkaracozoff@stripe.com
Activation — cold outreach, not cold investment
Generates a personal note referencing this founder's actual work, inviting a real application.
▸ Add / edit details
On save, the model re-reads scraped profile text plus your investor details, then rebuilds Experience / Education (adds and removes) and refreshes the score.
Reading scraped text + your details, rebuilding career facts, updating the score. Usually 15–40s.