I applied online. I interviewed at Optiver (London, England) in Nov 2024
Interview
OA -> HR Interview -> Technical -> Take-home Assignment -> Discussion of Solution
Interview Dates:
- HR: 14 Nov 2024
- Technical: 26 Nov 2024
The behavioural interviewer was nice, but he asked very in-detail questions. Be ready to answer follow-up questions on the smallest of details you mention.
The technical interviewer seemed very disinterested and had a lot of echoes from his side of the call. Very unprofessional when compared to how the first round interviewer acted.
Interview questions [1]
Question 1
Formal proof for:
You have two groups of marbles: 1 marble and 2^n marbles. You can only double of the groups at each step, taking the amount from the other group. Is it possible to reach a state of 0 marbles in one group and 2^n + 1 in the other?
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.
