Guillermo Rauch is Vercel’s founder and CEO and a software engineer who designed and co-authored Next.js. His work connects web interfaces, open-source tools and the infrastructure used to publish applications.[1][4]
Start with Pure UI →
X Background
Rauch describes his early technical education through Linux advocacy, JavaScript and participation in the MooTools core team. He moved from Lanús, Argentina, to San Francisco for a frontend engineering job. His account emphasizes learning by building and sharing software. Before Vercel, he started Cloudup, a file-sharing company acquired by Automattic, and worked on the Node.js ecosystem through LearnBoost. These projects connected browser interfaces to server software and helped shape his later focus on developer experience.[1]
Contributions
Rauch’s personal contribution record credits him with authoring Socket.IO, Mongoose and the Hyper terminal, and with designing and co-authoring Next.js. It also describes collaboration with Shu Ding on SWR. These are distinct kinds of work: communication libraries, database access, a terminal application and a framework for websites. The specific authorship claims matter because Vercel’s wider product portfolio is built by teams; leading the company does not imply writing every product it releases.[1]
Ideas
Describing an interface through its state
Pure UI develops a practical way to reason about interface design. Rauch starts with a video player and treats the interface as a function whose inputs describe the current situation. A ready video, a missing video and an interrupted connection need different visible outputs. Specifying those states reduces the need to write separate instructions for every transition between them. The essay also explains why apparently simple interfaces are hard to estimate: designers and programmers can overlook the number of states they must handle. Its examples make it a useful first read for anyone who knows basic JavaScript and wants to connect UI design with implementation.[3]
From deployment infrastructure to agents
In The AI Cloud, Rauch traces Vercel’s origin to frustration with cloud configuration in 2015. His proposed answer is infrastructure generated from application frameworks, reducing the amount developers must configure directly. The essay then argues that agents change the requirements: their work can take many steps, run in the background and produce new code while operating.[2]
Tools, writing & talks
Writing, research & talks
Start here
Pure UIrauchg.comA worked video-player example shows how describing UI states can improve collaboration between designers and programmers. Basic JavaScript helps with the code examples.
A concrete video-player example introduces his approach to interfaces; basic JavaScript is helpful.
Author[3]Vercel's libfx adds a durability adapter API to its fx agent harness. Turns run to completion across crashes and redeploys, resuming mid-tool-call, with storage on local files, Postgres or Vercel Workflows. Pi and OpenCode support is promised next. fx is marked experimental.
Catalog workOriginal source- The AI Cloudrauchg.com
Rauch explains why long-running agents need different cloud services from conventional pages and maps that argument to Vercel’s infrastructure strategy.
Author[2]
Tools
- Vercel Agent Skills
github.comVercel's official agent skills for auditing deployments and applying React and Next.js practices.
Catalog workOriginal source - Open Agentsopen-agents.dev
Open-source framework for background coding agents that edit GitHub repos autonomously via a web UI and sandbox VMs.
Catalog workOriginal source