The process took 3 weeks. I interviewed at Optiver (Los Angeles, CA) in Oct 2020
Interview
Couple of rounds, first is a hacker rank that is excessively long and difficult, followed by virtual calls. Need to know a range of mathematical topics as well as medium to hard leetcode questions.
Interview questions [1]
Question 1
Multiple probability questions, know the different formulas of distribution and probabilities
The interviews consisted of an OA, then behavioural, then technical and thena final round consisting of another technical, system design and behavioural. These last interviews all an hour each. I only got up to the first technical.
OA; quite long, 3 tests
Behavioral interview: just a short talk with HR, motivation,…
Technical Interview 1: fundamental CS, nothing more
Technical Interview 2: system design, very vague but just go with the flow
Technical Interview 3: live coding, still leetcode but optiver style is a very descriptive problem, but the main thing could be boiled down into only few lines
