I applied online. The process took 2 weeks. I interviewed at Jane Street (New York, NY) in Feb 2024
Interview
Heavy on expected value and articulating your steps on the problem. You should review fundamental statistics and know how many cards are in a deck. In addition I would recommend the green book if you have time. Interviewers were very nice, however your performance boils down to how you did on the questions they gave.
Interview questions [1]
Question 1
Rolling a dice questions, expected value, conditional probability.
Several phone calls to go to the final round. The phone calls consists of mathematical, probabilistic brain teasers which was not that hard for a mathematics major. Final round was to harsh for me, strong mentality is required
I applied online. The process took 4 weeks. I interviewed at Jane Street (New York, NY) in Apr 2026
Interview
Lots of expectation/probability questions. Make sure to study game-theory type question that involves expectations. Specific concepts in stochastic processes don't seem that important. The first two were relatively easy. Just make sure to ask a question if there is any uncertainty
very fun a lot of interesting problems. The person which was managing the interview process was easily aproachable and really nice to talk to. Also interviewers seemed really interested in the problems given and gave me a lot of chances to talk about them