I applied online. The process took 2 weeks. I interviewed at Jane Street (Melbourne) in Jul 2013
Interview
I submitted my CV via the website, and their HR replies me next day for a phone interview. All of the questions were very simple, but i didn't get the offer because of my poor english speaking skill.
Interview questions [1]
Question 1
The first three questions are mental math. I still remember the hardest one is calculating the 39% of 569 without any pen or paper. The next question is a simple probability: pick 2 cards from a set of poker without 2 Jokers, what is the probability that both cards are Ks. The last one is brain teaser: what is the angle between the minute hand and hour hand on a clock when 9:30.
Many rounds of brainteasers, some of which are more rapid fire in nature and others which require you to flesh out a detailed answer to a complex problem. Be well rested and well prepared!
mostly maths probability questions - a lot of conditional probability, relatively easy in the first round, but you need to think out loud - you need to be really fast
4 rounds in final. The first one is market making of cards. The rest are especially designed games. The interviewer may ask added question along the playing of the game