I applied online. The process took 4 weeks. I interviewed at Optiver (Amsterdam) in Aug 2023
Interview
There are a few rounds. First round is an online OA, which is fairly straightforward, mostly games and some math problems, some mental maths, sequences and probability problems etc.
The second round is an intro HR round, followed by 1-2 technical rounds before a final onsite composing of a technical, a behavioural and a desk shadow.
Interview questions [1]
Question 1
One question that they asked me was to think about the Simpsons paradox in the context of a football game. This paradox discusses probability, fractions and how they are not always representative of the true picture.
Multiple Rounds, first was behavioral and second was technical. They first did a pretty lengthy behavioral and seemed pretty good, but then the technical was mainly all Fermi estimations and market making games.
Online assessment followed by multiple steps of technical and behavioral interviews. Pretty standard process in general, positive experience. Seemed to care a lot about cultural fit more than other firms
I applied online. I interviewed at Optiver (Amsterdam) in Dec 2025
Interview
Passed the online games and behavioral interview. Rejected at the Cognitive Interview phase. Failed because of not taking risk directly and second guessing if I'm doing things correctly. Overall challenging and fun experience.
Interview questions [1]
Question 1
Play the betting games that we're providing you to increase PnL without any additional information.