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.

• Former founders only — we look EXCLUSIVELY for those who have started companies before
• Structured training — experience in top‑tier engineering environments (Big Tech or large‑stage startups)
• Elite education — Undergrad CS or related degrees from top 20 universities
• Bias toward action — hungry, resourceful, and relentlessly execution‑oriented

• $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

• 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.