I'm Pen. I design and build the systems that run complicated businesses, all the way through: the first idea, the thing that goes live, and the machine that keeps it going after. Mostly I work alone, across a range that doesn't add up to one industry. A gem business that sells rare stones live on camera, on a custom backend I built to replace its inventory and CRM. A public-record system that pulls nationwide data down to the district and makes political impact on real people legible. A linguistic tool that explores roots and simulates lexical erosion to make new language. Software that reshapes the browser to guard neurodivergent hyperfocus. What ties them together is the kind of problem I like, hard and whole, and that I stay on it until it actually works. Every project is a little different, and that's the part I enjoy.