I applied online. The process took 4 weeks. I interviewed at WorldQuant (Taipeh) in Nov 2022
Interview
There are multiple rounds of interview, and each interview mostly asked about math problems. The topics including some math proof, probability and statistics, and data structure. The traders are nice and they would guide you if you get stuck.
Interview questions [1]
Question 1
prime number proof
cards probability
some green books questions
few rounds of interviews with different portfolio managers and researchers mix of technical, finance and cs qns from each PM but this was a while ago, so it might be different now
I applied through college or university. The process took 1 day. I interviewed at WorldQuant (New York, NY) in Feb 2020
Interview
Introduce -> some behavioral questions -> a series of probability questions -> QA section. In the solving problem sections, the interviewer would ask you to think out loud to discuss all the detail of it.