Pillar

Trading Technology

Market structure, data pipelines, scanners and automation — the technology that actually moves and measures markets.

Off-the-shelf scanners show what everyone sees. I wanted one that sees what I define, so I built it. Here's the architecture and the hard parts.

When you click buy, someone is instantly on the other side of your trade. Here's who market makers are, and how they profit from the spread.

A price alert sounds trivial — until it must fire in real time, exactly once, and never on a bad tick. Here's the engineering that hides inside it.