I applied online. The process took 1 day. I interviewed at Jane Street (New York, NY) in Oct 2010
Interview
The first two rounds of interviews were with researchers. They were pretty nice guys at least it seemed that way during the phone interview. They asked me to walk through my resume first. (Just be confident with whatever you put on your resume.) At the end, you asked simple brain teaser. I failed the third round phone interview with a trader. I got stuck at one problem and that trader lost his patience on me.
Interview questions [4]
Question 1
estimate how many gallons of gas are consumed in US per week
suppose you live in middle town, your mom lives in downtown while your girl friend lives in uptown. You take subway to have dinner with either your mom or your girl friend every night. You always the first train that arrives at the station. why do you end up with have dinner with your girl friend 90% of the times? assume the uptown and downtown train run at the same intervals.
suppose you, player A, player B are in a tennis tournament. Player A has a better chance of beating you than player B does. If you would like to maximize your chance of winning two games in a row, which sequence would you prefer, ABA or BAB?
suppose you have a perfectly round disk. You put three legs randomly on this disk to form a table. Supposing the legs are perfectly perpendicular to the disk and are attached to the disk firmly, what is chance that the table will not fall when you flip the disk or in other word when you put the table to stand on its legs?
A phone call, about 40 mins long, there was no formalities only vet technical questions. Around about 4 questions, with extensions to them if you completed them quickly. You were expected to talk through your thought process and methods for solving these questions.
I applied through university. I interviewed at Jane Street
Interview
Zoom Interview with only audio. We had to think aloud while solving the questions. Questions were from estimation, probability and games. Lots of follow up questions were asked. It was difficult.
Interview questions [1]
Question 1
Compare games related to throwing dice, simulate m-sided die using n-sided die.
The process took 2 days. I interviewed at Jane Street (London, England) in Oct 2021
Interview
Hard, first interview wasn't so bad with some relatively basic probability questions, second interview was a massive step up contained much more difficult questions that took a longer period of time to answer
