1 intro call and another final interview. You don't need to know a lot, just be able to take in the information they give you and ask questions. Also be able to do mental math and basic probability.

Interview went very well. My interviewers were very attentive and took the time and care to engage with me. Process was also very straightforward and heard back very fast. Consisted of behaviorals as well as a few technicals regarding probability and options.