Things I’ve built, mostly where markets meet systems and the guiding question is “is this actually true?” Each links to a full write-up — and to a live demo where there is one.
Nutmeg — World Cup Result Predictor
A soccer Elo model that runs entirely in your browser: pick any two nations for live odds, or play out the rest of the 2026 World Cup 20,000 times. Built to test whether a simple model can beat the bookmaker's closing line — it can't, and that's the interesting part.
SOXL Algorithmic Trading System
An automated trader for a 3x leveraged ETF: a webhook→broker pipeline across three isolated environments, marketable-limit order laddering, a clock-aware trailing stop, and a validation harness — 400 configs, out-of-sample splits, a coin-flip control — that proved the strategy's edge was zero.
Pocket Trading Desk
An 8-inch mini-laptop rebuilt into a pocketable trading terminal — Lubuntu, a Tailscale mesh so it works from any network, and a custom order-book tape for stepping into trades by hand.