I think Starfighters was another, a recruiting firm that found talent via coding challenges, for which Patrick built a mock stock exchange with an API for peopl

I think Starfighters was another, a recruiting firm that found talent via coding challenges, for which Patrick built a mock stock exchange with an API for people to write trading bot clients to defeat specific 'levels' of the game. It was a lot of fun. https://www.starfighters.io/ https://www.starfighters.io/ [Note, as the site is defunct, it appears the TLS certificate hasn't been renewed and so you'll probably get a security warning from Chrome.]