I applied online. The process took 4 weeks. I interviewed at Optiver (Sydney) in Jun 2022
Interview
I made it to the third stage of the process, so passed the aptitude and quantitative HackerRank test, but blew the first interview with HR.
The quantitative test was pretty fun, and requires good mathematical problem solving more than hard maths. Memorising simple dice and card probabilities would be advantageous. It also had a data analytics section, where we were provided a long dataset with some nasty errors in it, so brush up on reshaping and cleaning data.
Had a nice chat with the HR interviewer. She mentioned they hire from all academic backgrounds for the quant researchers, so if you have an unrelated degree but like maths and are interested, you might as well go for it.
Interview questions [1]
Question 1
How do you know about Optiver?
What does Optiver do?
How do you use maths in your everyday life?
Passed Multiple Rounds.
First was a long OA with coding and maths questions.
Then HR
Then technical interview with a quant researcher.
Then a data challenge then i had to present the results of my data challenge.
Failed at this round
Interview questions [1]
Question 1
Markov and coin tosses questions.
Probability that a table with 3 legs places randomly on a circle doesn't fall.
Questions about what would happens if features were correleated, why this model not another one, why this hyperparameter. difference ridge vs lasso. difference supervised vs unsupervised
I applied through an employee referral. The process took 4 weeks. I interviewed at Optiver (Amsterdam) in Nov 2025
Interview
OA, HR interveiw, Technical Interview, Take home assignment, Final round interviws (one HR one tech discussing take home). OA can be practised on various websites online. HR screen focussed on team work a lot. Technical was not too difficult, I may have just lucked out with the questions. Final round discussed ML techniques and their assumptions
2:30 hr OA contains coding probability game and quick math. Then a market making game round. Need to be quick. Then will be another market making game round. Both asking questions to make market.
