first round was relatively easy, you're expected to do mental calculations and answer as fast as you could. its the second and thirst stages that it gets challenging. interesting process though. interviewees are pretty nice.
I applied online. The process took 2 days. I interviewed at Jane Street
Interview
Phone interview discussing probability games that focus on working out expected value and optimising game strategy, lots of maths and statistics were involved, should require decent knowledge of probability and averages.
Interview questions [1]
Question 1
Calculate the optimal strategy for heads and tails game
there's a suggested reading guide about interviews on their website. that's probably the bare minimum. Two phone screens about probability and strategy games and idk about the onsite, didn't get that far.
I applied online. The process took 2 weeks. I interviewed at Jane Street (New York, NY) in Nov 2022
Interview
Was very good process overall. The call was quick and right to the point and the interviewer was open to help when stuck on the problem. The call lasted a total of around an hour and was a great experience.
Interview questions [1]
Question 1
Some basic probability questions and brain teasers.