Timothy Caswell
Principal Software Engineer at Vercel
Mountainburg, Arkansas, United States
Summary
🤩
Rockstar🎓
Top SchoolTimothy Caswell is a Principal Software Engineer with over three decades of programming experience and 17 years in senior engineering roles, currently helping maintain and optimize Vercel’s global hosting platform. A longtime open-source leader and one of the original core contributors to Node.js (and creator of nvm), he builds across the full stack—from HTTP and websocket stacks and V8-based JS runtimes in C++ to browser frameworks, compilers, and bespoke data serialization formats. He has led embedded and distributed systems work at companies like Magic Leap and Kubos, shipping firmware, cloud backends, OTA update infrastructure, and even satellite networking stacks. Comfortable in Rust, Lua, C++, JavaScript and systems-level languages, he pairs deep implementation experience with operational rigor—on-call rotations, runbooks, and developer tooling—to deliver reliable, scalable platforms. Based in Arkansas, he also brings a maker’s ethos to product design and hardware work, having shipped IoT devices, AR headsets, and satellite systems.
17 years of coding experience
12 years of employment as a software developer
Bachelors of Science, Software Engineering, Bachelors of Science, Software Engineering at The University of Texas at DallasMath and Science, Math and Science at Texarkana CollegePre-Engineering, Physics, Chemistry, Pre-Engineering, Physics, Chemistry at Southern Arkansas UniversityComputer Science, Programming, General Education, Computer Science, Programming, General Education at University of Central Arkansas
Spanish
Stackoverflow
46reputation
4kreached
1answer
0questions
Github Skills (48)
asynchronous10
javascript10
middleware10
lib10
postgresql10
compilation10
back-end-development10
scripting10
api-design10
async10
css10
manager10
bash10
rails10
haml10
Programming languages (29)
Github contributions (5)
c9/architect
Feb 2012 - Jan 2013
A simple yet powerful plugin system for large-scale node applications
Role in this project:
Back-end Developer
Back-end DeveloperContributions:70 commits, 4 comments in 10 months
Contributions summary:Timothy primarily contributed to building a plugin system for Node.js applications, focusing on creating an HTTP server. They implemented an HTTP server plugin with functionalities such as route handling, and middleware. The user’s contributions also included refactoring the plugin interface and integrating static file serving capabilities, demonstrating a focus on expanding the core functionality of the architectural framework.
node-application
creationix/howtonode.org
Jan 2010 - Feb 2022
This repo contains the actual articles for HowToNode.org
Role in this project:Front-end Developer
Front-end DeveloperContributions:362 commits, 9 PRs, 19 pushes in 12 years 2 months
Contributions summary:Timothy's commits primarily focus on the styling and presentation of the HowToNode.org website. They introduced a new stylesheet using LESS and applied it to the site, with the intention of creating a new look and feel. They also updated the styling for the main and sidebar sections, including the addition of a version tag. Further work included adding a new HTML structure for the index page and applying a new "dandelion" style to the site.
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.