I research and build software tools and interfaces to help us think and create.
I’ve been writing online since 2014 – this blog is home to a half million words I’ve written about software research, creative work, community, and the life I live in between.
Over the years, I’ve built well over 100 side projects, from programming languages and compilers to 3D renderers, interactive learning environments, UI libraries, and a suite of personal productivity tools I depend on every day.
Elsewhere on the web, I also write more technical posts on software and some short fiction and other literary vignettes.
Outside work, I play the piano and guitar – you can find my music on Spotify and at linus.coffee/music.
I also dabble in digital art.
I grew up in Korea and Indiana, went to school in Berkeley, and currently live in New York City.
Previously, I was a software engineer at Replit, Hack Club, and Spensa.
Metamuse podcast, Self-made tools
The Changelog, Building software for yourself
GopherCon EU, When Toy Languages Grow Up
I’m most active on Twitter and GitHub as @thesephist. The best way to contact me is either through Twitter, or my email at my first name @ thesephist.com.