twu.
The work of Tjong Wu — builder, systems thinker, and quiet engineer. This is where I map what I’ve made: the things I ship, the systems I trust, and the way I think.
The projects I’ve built.
riskmetricenter the station ↗A risk model for Bitcoin DCA: band and cycle risk, shipped as a live dashboard.
A decision-support app for the options wheel: candidates scanned and scored 0–10 on a transparent scale — it never places an order.
tradeagententer the station ↗A crypto trading bot for perpetual futures: modular strategies behind one risk gate, run paper-first with a single live switch.
Turns a Dutch rental listing into a transparent, rule-grounded point score and the lawful rent that follows.
The system the rest of this work runs on: a second brain, a skill library, and agents in one repo.
Watches the prices it is pointed at and reports by message — scheduled, self-hosted, unattended.
Push-to-talk dictation for Windows — speech becomes text on the machine, and never leaves it.
FareSignalenter the station ↗Tracks flight fares on watched routes and signals when one drops.
promptvaultenter the station ↗A personal vault for prompts — organised, refined in place, ready to reuse.
wk2026enter the station ↗A value model for the 2026 World Cup — expected value against the bookmaker, match by match.
The web home of a poké restaurant — menu, story, and location, kept calm.
belastingcalculatorenter the station ↗A Dutch income-tax calculator — box 1, 2, and 3, computed transparently.