Based in San Francisco, Guillermo Rauch is a software engineer and CEO of Vercel. Originally from Lanús, Buenos Aires, he has shaped the web development landscape through notable projects like Next.js, the most popular React framework, and Socket.IO, a key library for real-time communication. His company, Vercel, powers the digital presence of brands like The Washington Post, Porsche, and Nintendo. Previously, he founded Cloudup, which was acquired by Automattic to enhance WordPress's capabilities. Guillermo’s technical contributions include creating Mongoose for MongoDB and authoring “Smashing Node.js,” showcasing his profound influence on JavaScript and developer experience (DX).