I applied online. The process took 1+ week. I interviewed at Optiver (Arlington, TX) in Sept 2023
Interview
The coding assessment consisted of 4 programming questions on Hackerrank, to be finished within 2 hours. The next part was a multiple choice questionnaire for 20 minutes, followed by brain teaser and reflex measuring games that lasted for an hour.
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