online assessment and video call interview, asking probability and expected value type questions. pretty straightforward. The questions are quite difficult but interviewer is very kind and happy to work through questions with you
Interview questions [1]
Question 1
Imagine you have a 9-sided die, you get points corresponding to the face of the die after rolling, however, rolling a 9 ends the game and gives score of 0. what is your expected value of the game, how would you play?
Multi stage interview process, lots of probability and maths questions, mainly about expected value and optimal strategy for games. First round fairly straightforward. No online assessments or early stage HR rounds
Interview questions [1]
Question 1
You are playing a one-player game with two opaque boxes. At each turn, you can choose to either "place" or "take". "Place" places
$
$1 from a third party into one box randomly. "Take" empties out one box randomly and that money is yours. This game consists of 100 turns where you must either place or take. Assuming optimal play, what is the expected payoff of this game? Note that you do not know how much money you have taken until the end of the game.
I applied online. I interviewed at Jane Street (London, England) in Jan 2026
Interview
I did an interview in January. The interviewer was very nice and asked some probability questions. I answered the questions correctly but stumbled a bit. I didn't get a follow up interview.
Interview questions [1]
Question 1
The interview question was a probability problem, asking if 100 people are in the line and another line opens up, what should be my strategy. The follow up question was whether the answer was realistic and what would differ in the real world (and not assuing everyone makes decisions based on probability).
I applied through university. I interviewed at Jane Street (New York, NY)
Interview
stats questions—typical coin tossing games, probablility questions associated with it. very hard and did not pass the second round. not sure if i have a new shot. the recruiters are very nice though.
Interview questions [1]
Question 1
toss coins of values 1~5, something about expected value