I applied online. The process took 1+ week. I interviewed at Flow Traders
Interview
The title is called “quantitative researcher”, but don’t worry the whole interview process involve no research skills. A round of simple IQ test. A take home assignment of simple probability puzzle. Then an on-site interview FULL OF brain-teasers. If you want a real technical position, my recommendation is not to waste your time on this interview.
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
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.
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?
