I applied through college or university. I interviewed at Jane Street (New York, NY) in Oct 2025
Interview
I Only got to first round. Straight into technical. Nothing behavioral but you need to talk about resume. I would have something prepared about why trading and why you like the culture at Jane better than maybe some other firms.
Interview questions [1]
Question 1
If you are playing a game where you are consecutively flipping a coin. I win if 4 heads shows up and you win if 4 tails shows up. They don’t need to be in a row. What is the maximum number of turns this game can take.
Went through 3 rounds of interview, all of which were focused on math. they started with basic questions and built up to harder ones. Also some behavioral questioins at the start of each round
Applied online and passed the resume screen, got invited to a first round, didn't pass, was my first time interviewing for quant and nerves made me answer not quite at the best of my ability
Interview questions [1]
Question 1
In a game you are given a distribution of marbles, how to figure out the maximum payoff without knowing the colors
I was qualified for the first round of the interview proccess. I was asked about the reasons why i want to become a Quant and why i applied in Jane street for this role. After I was asked two probability questions. The interviewer was ok but at some moments I wasn't sure if she was following my thoughts
Interview questions [1]
Question 1
Mainly I failied since I tried to give them a strict answer to one of the problems(which was impossible to calculate in this time) and the wanted to hear some intuitive approach which leads to approximately correct answer.