Founder Profile
Guillermo Rauch
Last reviewed: October 2026 · By Swet Parvadiya
Who is Guillermo Rauch?
Guillermo Rauch is a founder of Vercel Inc., which was founded in 2015.
- Company founded
- Vercel Inc.
- Founded
- 2015
Background
Grew up in Argentina and became known as an open-source JavaScript developer, most notably as the creator of the Socket.IO real-time library.
Founding Story
Guillermo Rauch founded ZEIT in San Francisco in 2015 and has been CEO since. ZEIT launched the Now deployment tool and open-sourced Next.js in 2016, then renamed itself Vercel in April 2020. Under Rauch, Vercel added v0 and the AI SDK in 2023 and raised its Series F at a $9.3 billion valuation in 2025. Guillermo Rauch was born in 1990.
Sources
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