I was shortlisted based on CV from college after which we were subjected to an online Quantitative round which tested our mathematical skills and comprised around 60 questions with each question having individual timers.
I applied through a recruiter. The process took 6 months. I interviewed at WorldQuant in May 2012
Interview
I had 5 phone interview in total. 2 with math questions and 3 with panel about resume, research . I also had 1 math test and 1 personality test.
Interview questions [1]
Question 1
There are some probability questions which is quite difficult. But you really do not need to solve to the end. They just want to test the way you think and solveproblems.