I applied through an employee referral. The process took 4 weeks. I interviewed at Optiver in Sept 2025
Interview
3 hours of online assessment: including coding, probability and some games
1 hour zoom interview: betting game with trader
1 hour zoom interview: technical questions with senior researcher
take home data project: predicting profits from features
fail after submitting data project
Interview questions [1]
Question 1
technical questions with senior researcher: marble games, expected waiting time for bus, and an open ended questions to estimate a real world number
The process is hard but exciting. The first online assessment contians bits of coding, quick game skills aswell as logic tests. Overall a good process, but very challenging. D d
OA is extremely difficult.
Two medium questions and one hard question.
Followed by lots of probability and statistics questions.
Then logic questions.
Finally the game, which is the easiest part.
Interview questions [1]
Question 1
You are given two envelopes. One contains twice as much money as the other. You randomly pick one envelope and see $100 inside.
Should you switch?
Online assessment, two HR rounds, one technical round with 3 questions (brain teaser, probability, guesstimates), a take home project and an interview about the project. Overall ok experience, but the online test was a bit intense
Interview questions [1]
Question 1
how much revenue will Apple make while I drop a ball from the window until it lands