Standard hiring setup: Initial tests, video interview, Skype Interview and then the main assessment day. Be sure you’re comfortable with discrete probability as this will be heavily tested and be comfortable talking about futures and options in the context of market making (ie hedging risk). Read everything you can on their website from their yearly report to their mission statement as you’ll understand who they are - it’s unique. Lastly, ensure you’re up to date with current market affairs (index movements, ETFs) and can combine this with how a market maker, IMC in particular, may work with this.