My interview process started with many phone conversations excellent with Patrick and Kyle. I had one last obstacle, however, and that was a phone interview with someone from the Chicago office.

OA 35 min for 25 quant problems followed by a leetcode-esque problem in 25 mins. The quant problems are pretty doable but you need to be very fast otherwise you won't score high enough. The leetcode problem's logic is trivial hash-maps but getting the right format output is the hardest and one needs to recall a lot of syntax while you can't use google search.