I applied online. The process took 4 weeks. I interviewed at WorldQuant in Mar 2013
Interview
Applied Online and was scheduled for telephonic interviews. Had 8 rounds of telephonic interviews before final offer was given. First seven rounds had a set pattern of initial 3 puzzles and then some question asking to give ideas about trading signals. The questions were standard puzzles on probability and discrete mathematics.
The last round was on basic algorithms on finding the kth largest element in O(n) time.
Interview questions [1]
Question 1
Some sample questions:
Q. You have a biased coin in which the probability of getting a head is 51%. Create an event out of this coin which has a probability of 25%.
Q. There is a calculator in which all digits (0 to 9) and the basic arithmetic operators (+, -, *, /) are disabled. However other scientific functions are operational like exp, log, sin, cos, arc tan, etc. The calculator currently displays a 0. Convert this first to 2 and then to 3.
Q. There are five points in an equilateral triangle of side length 1. Prove that there are two points with distance less than 1/2.
I applied online. The process took 2 months. I interviewed at WorldQuant in Nov 2025
Interview
Screening -> Online tests in math (many problems on a variety of topics) and programming (3 easy problems on data parsing and filling in gaps) -> 3 technical interviews (math, programming, and DS/finance), usually a few simple warm-up questions and 2 more difficult problems to test the depth of knowledge -> interviews with teams, talk about your experience, scientific work, then questions related to the specifics of the team you are applying for, you need to come up with hypotheses about the data -> rejection
Interview questions [1]
Question 1
The team interview included questions from the Green Book. The questions from other stages were unique but fairly straightforward, with the exception of one that asked about knowledge of mathematical induction.
I applied online. The process took 2 months. I interviewed at WorldQuant (Ho Chi Minh City)
Interview
There were 5 rounds in total. It began with a 30-question math assessment on HackerRank, followed by two face-to-face interviews focused on probability. Next, I completed a 24-hour take-home test and presented my findings. The process concluded with a final interview with a manager to assess cultural fit.
Very hard interview, I suggest you to study hard linear algebra statistics probability and more more more more because again it is hard very hard and I need to hit word qouata here
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