Jane Street Intern Interview Questions

I was asked a few simple probability questions including conditional probability and expected value then the interviewer asked me if I had any questions for him. They emailed their decision on whether or not to move to the next stage the following day.

The hr team contacted me very quickly. The first interview was basically CV screening and very easy mathematics. The difficulty of the mathematics increases in later interviews. I made it to the third phone interview and did not get invited to onsite interview.

Applied as an someone with an engineering background. Would have done better if I had the ability to study more theoretical math. Was not able to get the internship. Will be applying again next year

Four rounds of technical interviews, mainly involving math puzzles or probability/combinatorics problems. They are meant to get progressively harder as you go along. Definitely different from typical interviews. Did not get asked about CV at all.

Interviewer asked series of probability questions. It was a phone interview that lasted around half an hour. They asked 3 probability questions and I have to explain my thought process and how I got to the answer.

It was an excel challenge to demonstrate the ability to track transactions , not many instructions were provided but it seems that having a undergrad business school background would be helpful

I went through 5 stages. The last one is in London, the ones before are phone interviews. The questions mainly built around Game Theory and Probability. During the onsite interview, you are given a set of coins which will be used to play "games" with them

Received an excel sheet and got asked for a first interview. Never heard back. The interview process was tedious. Lots of probability questions. The process is 3 interviews long. However, I heard if you get it, it's great.

First round was a a short 30 - 45 minute phone call with some basic probability questions. None of them were particularly tricky and it seemed to be more of a "do you know the basics?" with them also asking for what assumptions I was making and why. The second round was two questions which I found much more challenging and was allowed one hour for. For both they were willing to work with you and wanted to hear your thoughts out loud. They let me run with a mistake until I noticed it and then would go back to point out where I went wrong.

Applied online and had to complete work before I got the phone interview. The questions were all critical thinking based. Some a bit challenging. I didn't get a lot of feedback from the interviewer but I guess I wasn't asking the right questions. They expected me to talk through my answers but I was too in my head to articulate anything.