Please describe the interview / hiring process.
4 phone interviews of increasing difficult. The first was mostly mental math problems (no pen/paper but I guess that is personal integrity) and then some basic probability/combinatorics. The hardest part was giving a confidence on the number of questions I got correct. The second and third involved Fermi problems (including 90% CI) and choosing optimal strategies in various games (and being able to justify why). The final interview was more of the same plus basic market making.
or Want to Sign up with your social account?