Security and systems engineer who has run his own site on his own hardware, continuously, since ~2003 — so I don't just BUILD things, I operate them for years and live with every decision I made.
The thread through all of it: own the full stack, down to the metal. Applied cryptography (HMAC-keyed URLs, WebAuthn and the ACME/TLS I run myself), database internals, hardware I designed and 3D-printed, up through the web app that serves the whole thing.
Two worth starting with (pinned below):
- FeOphant — a Postgres-compatible database written from scratch in Rust, by hand, in 2021. Point
psqlat it and the rows come back. Pre-Copilot, so it's a clean look at how I think with no AI in the loop. - RemindWall — a medication-reminder appliance that's been running on my wall for over a year (a Mac plus two iPads, a physical NFC tap to confirm a dose, 3D-printed mounts). Not a demo — something my family actually depends on.
Most of the other repos here are small upstream bug fixes and experiments.
The whole story — the projects, the blog and a résumé — lives at hotchkiss.io.