FounderVerified
Sam Stenner
Co-founder & CTO of Cosine; Exeter CS; built the Fancy app (acquired by GoPuff) and contributed to the Vercel AI SDK; youngest person to publish a game on Steam (age 17).
Sam Stenner is co-founder and CTO of Cosine. A University of Exeter computer science graduate, he built the mobile app for Fancy (acquired by GoPuff) and has contributed to the Vercel AI SDK. He is reported to be the youngest person to publish a game on Steam, at age 17.
Overview
- Role
- Co-founder & CTO
- Based in
- United Kingdom
- Prior experience
- Fancy (YC S20), GoPuff, SimplyVideo
- uk.linkedin.com/in/samstenner
Affiliated funds0
No linked records yet.
Frequently asked
- Who is Sam Stenner?
- Sam Stenner is co-founder and CTO of Cosine. A University of Exeter computer science graduate, he built the mobile app for Fancy (acquired by GoPuff) and has contributed to the Vercel AI SDK. He is reported to be the youngest person to publish a game on Steam, at age 17.
- What is Sam Stenner's role?
- Sam Stenner is Co-founder & CTO, based in United Kingdom.
- Where did Sam Stenner work before?
- Sam Stenner's prior roles include Fancy (YC S20), GoPuff, SimplyVideo.
Sources & citations2
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
Named as a co-founder of Cosine
Tracxn: Cosine - 2026 Company Profile, Team, Funding & CompetitorsReported2026-05-26 - 2
Co-founder & CTO of Cosine; Exeter CS graduate; built the Fancy app (acquired by GoPuff); contributor to the Vercel AI SDK
Y Combinator: Cosine: Fully Agentic SWEVerified2026-07-18