I applied online. The process took 2 months. I interviewed at Optiver in Nov 2021
Interview
CV screening followed my long psychometric test. Followed by mental maths tests then HR interview if all passed.
Final round (I think) was interview with traders consisting of brainteasers, option theory, statistics and market making game. Practice market making as that's the core focus
Interview questions [1]
Question 1
You have 16 watermelons and a seesaw. minimum number of tests to determine heaviest 2.
Similar to 25 horse race brainteaser
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.