The process the quick; however, there are too many different topics to prepare. They do not give enough time for people to prepare before the interview, so be prepared before you apply.
Other Quantitative Researcher Interview Reviews for Flow Traders
Recruiter reach out, online assessments, two 1 hour technical rounds focusing on different things, then onsite. Helps to think academically instead of intuitively. It was a smooth process. Not much more to say
I applied online. The process took 2 weeks. I interviewed at Flow Traders (Amsterdam) in Oct 2025
Interview
Easy online test, easy going HR interview, quite easy first technical interview, although I didn't perform well. Questions were about linear regression, from basic ones to more tricky ones(can we get a negative R^2 in linear regression?). then a quite easy brainteaser about game theory situation with 3 players that have to pick a number on a segment and then a uniform is drawn and the winner is the closes one to the realization.
Interview questions [1]
Question 1
if two univariate linear regression have a R^2 of 0.1, what is the maximum possible R^2 of the bivariate regression?