About
Hi, I’m Sean. I like hard problems.
I spent 8 years at Meta working on Security, Integrity, and Creator Experience. Now I focus on building with agents, here at Snowfox Builds, my one-person independent lab.
What I work on
Three rabbit holes, one workshop.
LLM agents
How coding agents actually perform on long, messy, real-world tasks — and how to measure the difference between one setup and the next.
Infrastructure
Reproducible environments, containers, and the unglamorous plumbing that makes an experiment trustworthy.
Magic: The Gathering
A favorite rabbit hole — and, it turns out, one of the best stress tests for software there is.
Stay in touch
Follow along, or bring me in.
Work with me
Putting coding agents to work?
Consulting details are on the way. If your team is building with agents and wants a second pair of eyes, say hello.
Get in touchNow
On the bench right now.
What the lab is building, testing, and writing about.