I applied online. The process took 2 weeks. I interviewed at Jane Street
Interview
First interview was about my resume and the usual personality stuff
Second interview was some brain teasers (5 qns)
A unit cube is dipped in green paint. The painted cube is then cut 3x3x3 smaller cubes. What is the probability of you randomly picking a cube and then rolling non-green on the outside?
i think the ans is : P(pick cube with only 1 side painted)*P(landing on green face) + P(pick the centre most cube)*P(landing on any face) = 6/27*1/6 + 1/27
Interview questions [1]
Question 1
If 1st Jan 2015 was on a Monday, which day would it be on 1st Jan 2025?
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