I’m Sean Moss-Pultz. I build systems that expand human freedom, starting from first principles and aiming toward the edges of what’s possible.

I think of my work as exploratory engineering: imagining technologies that don’t exist yet, then figuring out how to make them real. It’s not speculation. It’s engineering grounded in physics, systems thinking, and the belief that better tools can unlock better futures.

Right now, I’m focused on Feral File, a cultural institution and technology company I co‑founded with Casey Reas to champion computational art—i.e. art that responds and evolves through code, models, and data. We collaborate with leading artists and institutions like MoMA to curate exhibitions and build open tools that make living with this art effortless.

I also founded and led Bitmark, where we built open infrastructure for digital property rights—tools that give individuals control over their data and creative work.

Earlier in my career, I led the creation of Openmoko, the first open-source phone – an effort to challenge the walled gardens of early mobile tech. I’ve helped develop e-paper platforms, built hardware for ultra-low-cost computing, and launched products across Asia, Europe, and the US.

My background is in math and physics, which I studied at UC San Diego. I grew up in California, spent nearly two decades living and working in Asia, and now live in San Diego with my wife and two kids. When I’m not building, I surf, climb, fly small planes, and chase down new questions. The through-line in all of this is simple: I want to help people explore and improve what they’re capable of.