I applied through university. The process took 2 weeks. I interviewed at Jane Street (Cambridge, MA) in Oct 2017
Interview
They first came to my school and interviewed people there, at which we solved brain teasers and puzzles. The interview questions at this stage are mostly mathematical. After that, they will set up a phone interview in which they ask you some more questions about yourself as well as ask you to solve some more math problems.
Interview questions [1]
Question 1
They asked for an estimation question on a large-scale world problem
Heard Jane Street has exciting internships for female students so I decided to apply. Filled out online application. Received a response for online assessment. The assessment was quite difficult for me. The interview was even harder. Lots of technical questions.
Interview questions [1]
Question 1
Two players, flipping a coin until one player wins. A wins if the roll ends with HHT. B wins if the roll ends with HTT. What are the odds B wins the game.
very hard and demanding. they are very selective. they like puzzles and pushing you to think out loud. interviewers are nice though. would possible try in the future. maybe. will see
Asked to play a game and probability - the probability questions were easy, and the game had very little math. It was over an hour, closer to 1 hour 30 minutes. Over zoom