WorldQuant Quantitative Research interview questions

Behavior and technical test followed by a very technical interview from senior researcher. A lot of questions from programming, probability and differential equations. It was the hardest interview I have ever met and I could not able to answer 40% of the questions

An online exam followed by an on site interview (Ramat Gan, Israel). The interview had four parts: Human Resources, programming skills (python and c++), statistics and logics questions. The last part was in English. The interview took around 3 hours. The online exam took around 2 hours. Every question had a limited amount of time. It focused on statistics, but some questions involved general programming skills too (not a specific language).