I applied online. The process took 1+ week. I interviewed at Optiver in Feb 2023
Interview
Fast math calculations, mental math, fractions and simple one incognita expressions. there is plenty of online resources similar just google them. Recommend to practice for a month before applying, as you will probably be invited to the math test that has 5 days deadline, imo not enough to practice
Interview questions [1]
Question 1
First interview with statistics questions, make a market
3 hours of online assessments followed by an HR interview. Afterwards you are given two technical interviews, both with a different experienced trader where they make you play market making games to test how you adapt strategies.
Interview questions [1]
Question 1
if you have 8 coins, 1 cent, 2 cent, 5, 10, 20, 50, 100, 200. What is the probability that you can pay for an 80 cent item if you choose 3 coins randomly.
The process took 4 weeks. I interviewed at Optiver (Amsterdam) in Oct 2023
Interview
First you get an Online assessment consisting of 80in8, Zap-N games, Sequences, Probability and Zap-Q behavioural questions, then behavioural interview, followed by two technical interviews and then one final interview.
I applied to optiver via their website they got invited to participate in a series of steps. You had to pass each step to be able to the next one. There was 5 steps in total, made it to step 4.