I applied through college or university. The process took 2 weeks. I interviewed at Jane Street in Jan 2014
Interview
Contact was made by e-mail to setup a phone interview. Interview was extremely quantitative, but relatively obscure. Main question was about a complex probability game that the interviewer expected you to calculate mentally. A few more obscure technical questions (as a person coming from a math background) and the interview was over. Process seemed self-defeating as a very small number of people would have the intuition to quickly do a problem like that in their head, but that says little about skill.
Interview questions [1]
Question 1
As mentioned above, a probability game between two players was given and it involved a complex card game requiring combinatorics.
I applied online. I interviewed at Jane Street (Chicago Ridge, IL) in Jul 2024
Interview
The interview was hard and very challenging. It involved a lot of Statistical questions and theory, mainly probability theory. I had to show my quantitative problem solving skills and technical ability in coding
Interview questions [1]
Question 1
They asked me about hackathons and Math Olympiads I have written
Standard interview for them, a call with some probability questions. If you get three questions right you pass, otherwise just hope for the best. Onsite is where it gets interesting but didn't make to there
Application by web form, received an online test later, then I had the first round interview online, doing some brain teasers questions, which msy be quite different from those you found in green book, more complicated and practical. The interviewer is smart but quite arrogant.
Interview questions [1]
Question 1
What is the strategy to optimise the payoff or minimise the loss