Quantitative Trader Intern applicants have rated the interview process at Jane Street with 3.7 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 76% positive. To compare, the company-average is 63.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Quantitative Trader Intern roles take an average of 33 days to get hired, when considering 49 user submitted interviews for this role. To compare, the hiring process at Jane Street overall takes an average of 17 days.
Common stages of the interview process at Jane Street as a Quantitative Trader Intern according to 49 Glassdoor interviews include:
Phone interview: 40%
Skills test: 27%
One on one interview: 17%
Other: 6%
Presentation: 4%
IQ intelligence test: 4%
Personality test: 2%
Here are the most commonly searched roles for interview reports -
I did the first step of the interview, which is the 4-question online test. I had 30 minutes to do it and it was about easy probability questions. It was easy
Interview questions [4]
Question 1
We randomly select 4 numbers from the set of the first 20 prime numbers, without replacement. What is the probability their sum is even? Why?
You have been chosen to play a game involving a 6-sided die. You get to roll the die once, see the result, and then may choose to either stop or roll again. Your payoff is the sum of your rolls, unless this sum is greater than 9, in which case you "bust" and get nothing. What is your strategy for this game? That is, for each possible outcome of the first roll will you choose stop or to roll again?
A bag has three coins in it which are visually indistinguishable, but when flipped, one coin has a 10% chance of coming up heads, another as a 30% chance of coming up heads, and the last has 60% chance of coming up heads. I randomly draw a coin from the bag and flip it, and the result comes up heads. What is the probability that if I reflip this coin, it will come up heads again? Why?
We have two urns. You can't tell them apart from the outside, but one has seven $1 chips and three $10 chips, and the other has nine $1 chips and one $10 chip. You randomly draw a chip from one of the urns and it happens to be a $10 chip. Without replacing this draw, I offer you a chance to draw and keep a chip from either urn. Should you draw from the same urn or the opposite urn, and what is the expected value of the chip you draw? Why?
There was a few phone interviews that involved probability and game theory questions. Before a final round interview in hong kong. Interviewers are very nice best to describe your thought process
Interview questions [1]
Question 1
They asked me probability and gamer theory questions.
I applied in-person. I interviewed at Jane Street (Sydney) in May 2026
Interview
Attended first year program, got interview directly from program. Then had two technical rounds, rejected after 2nd round. Both around 45 mins long. First one definitely quite easy compared to 2nd one. Interviewers very nice and considerate and want to see you succeed which definitely made the experience way better.
Interview questions [1]
Question 1
For first round I got 2 questions, one based on a game against a single opponent involving a pair of die. The other question was more a solo game, involved some EVs / playing optimally when playing this game ie asked me how would you play this game, if he game changes slightly by now having X and Y, what is the EV of this new game.
Interviewed for two rounds. I passed the first round last year so was able to continue immediately with the second this year. Probability/game theory questions. The interviewers are friendly and helpful.
Interview questions [1]
Question 1
If you roll a dice and receive that amount in dollars but have the option of rerolling up to two times, how much would you like to pay to play this game?