I applied online. The process took 2 months. I interviewed at Optiver (Chicago, IL)
Interview
Gauntlet OA (you probably know about this), then recruiter chat, one LeetCode/dsa round, then a system design, and after that a superday. Not much you can prepare for the OA other than have a mouse and grind zetamac and memory tests. They also don't give feedback on what you can improve so that kind of sucked. Good luck!
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
