Quantitative Trader Interview Experiences

Big group meeting where they gave an overview of Jane Street and the internship program and then split us into smaller groups for individual interviews. HR plus the manager had behavioral questions. They also made us do this Thomas International psychometric test, like 20 minutes of pattern matching and personality stuff.

Phhone interview focused entirely on probability and expected value. Fair coin toss variants, a betting game where you set the price and they decide whether to buy or sell, conditional probability with dependent events. I did fine on the simpler ones but the third question about optimal bidding strategy in a sequential auction I had no clue on.

80 arithmetic questions in 8 minutes, practiced TraderMath for a week and got like 65 right which pretty sure ended it

Froze on a market making problem and got ghosted after. Three phone rounds, probability and Bayesian stuff.