I applied online. The process took 3 weeks. I interviewed at Optiver (Sydney) in Apr 2025
Interview
Online assessments which were a series of games, a probability test and a personality test. After this is a behavioural interview with someone in hr, was only about 15mins and didn't have any technical questions.
First you send your CV and then you get different "challenges". One for sequences, one for probability and one for coding. All of them are quite hard, especially the probability one.
Interview questions [1]
Question 1
Roll one hundred dices, remove all possible groups of 1,2,3,4,5,6. Expected amount of dices left.
OA, phone, 3 interviews, each was a fun game that required risk taking and dealing with expectation. stay level headed and think about many cases. communicate clearly with your interviewer and explain everything.
a sequence of cognitive brainteasers requiring speed and accuracy, First round / online assessments consists of game-like rounds . Make sure to not hesitate in video rounds, as they are testing your confidence too.