CTO Co-Founder

Cold Start Ventures is looking for exceptional CTO co-founders to lead new companies in our portfolio. Each venture is backed by tier-1 VCs with $1.5M+ in committed day-one capital. You’ll join as a true co-founder — with the equity, influence, and expectations that come with it. If there’s a fit, you’ll hear from us within 24 hours. At Cold Start, we incubate companies at the intersection of healthcare and AI, built around deeply researched, conviction-driven theses. To date, our team has helped create over $2B in portfolio value, including breakout successes such as 3Y Health and Berry Street. Our ventures benefit from a tested playbook that drives a 6× higher survival rate to Series B than the industry average. What We’re Looking For - Former founders only – we look EXCLUSIVELY for those who have started companies before - Structured training – experience in top-tier engineering environments (Big Tech or lage-stage startups) - Elite education – Undergrad CS or related degrees from top 20 universities - Bias toward action – hungry, resourceful, and relentlessly execution-oriented Why Cold Start? - $2B+ portfolio value created – built scale companies like 3Y Health, Berry Street - $1.5M+ seed capital on day 0 – you don’t need to bring your own thesis or investors - True co-founder of the business – your voice, equity and contributions will be that of a true co-founder - 6× survival rate to Series B – our playbook consistently outperforms industry averages What You’ll Do - Join an existing Cold Start venture as CTO and co-founder - Prototype and launch the product, leveraging our playbook and technical resources - Recruit and lead a world-class team - Build a category-defining company with enduring impact We are in-person out of SF and NYC.