We talk a lot about quantitative trading on the podcast, but typically from a rather big picture perspective, and not at the level of actually building the systems needed for trading and data analysis. On this episode, we speak with Camille Fournier, the head of Platform Engineering at Two Sigma, the financial services firm that, among other things, runs a large hedge fund. Fournier, previously the CTO at Rent the Runway, discusses how her job works, the challenge of managing software engineers, and how tech within a financial services company is different than tech within a consumer-facing startup.