Several rounds of interviews. First interviews are mainly brainteasers based on probability, statistics and game theory that become increasingly harder. Last interview round is on-site (can be virtual though) with plenty of fun games. They have their own market making language which should be practiced in advance.
Interview questions [1]
Question 1
Typical probability questions. What’s the mean value of a dice roll, sum of two dice, etc
The process began with serveral online tests for maths and logic. They gave a personal interview to get to know the candidate better and evaluate fit for the company/role, then held a technical interview covering maths and logic problems.
We started with a bit of small talk, followed by some probability questions. Ended with some basic algebra questions, Make sure to ask questions if you have any. Good experience, feels like the interviewer was trading.
Difficult interview
Application
I interviewed at Jane Street (Hong Kong)
Interview
Fun and filled with unexpected questions. The questions rely on fast thinking and fast calculations, and sometimes intuition because there is no sufficient time for me to work through the whole problem.