About

I’m Jon, an engineer based in Seattle. My day job can be roughly summed up as building and operating some of the world’s largest supercomputers.

jon.dev is where I publish things that are, to me, both technical and interesting. That intersection has perennially included systems programming, firmware, and low-level electronics tinkering. More recently, it has come to include some topics related to AI. I am particularly interested in how to use AI effectively, and in how its effective use can allow me to do things that I would otherwise have left undone.

This site does not include comments, social buttons, or analytics. The rest of the internet appears to have those functions covered. If something from here happens to end up on Hacker News, I’m reasonably likely to see the discussion there.

This site uses type by Matthew Butterick and Joshua Darden. Butterick designed Concourse and Triplicate; I use them here for structure and code, respectively. I licensed both from MB Type, where you can license them for your own use. Darden designed Freight Text; I use it for reading, and Adobe Fonts serves it here.

Good type enables people like yours truly to present their work with a bit of character and, I hope you’ll agree, beauty. I’m glad to pay for it, and especially glad when that supports an independent designer or foundry.

I met Matthew—and learned about his typefaces—at RacketCon 2017. The program included dependent types and experimental type systems; Matthew supplied a more legible kind. His Beautiful Racket brings the two kinds of type together: it is a great book about the Racket programming language, made with his Racket-based publishing system Pollen and set in several of his own typefaces, including Concourse and Triplicate.