Hackerank OA which asked a series of maths problems. Very time pressured. Not standard probability or EV problems, more misc maths questions. Didnt get past this round, definitely the hardest OA i've seen.
The whole thing was like 15 minutes. After some very basic HR questions, I got 10 math problems, half a minute for each. The interviewer was helpful. I heard back from them in 3 days.
Smooth, entirely virtual, only technical questions. Two people per interview, will ask follow up questions of escalating difficulty from what is usually a pretty easy initial start. Interviews scheduled back to back in a superday
Quite hard, few probability questions but they did give hints
Interviewer was nice, hour long interview with mostly technical questions and a few behavioral questions (tell me about yourself)...
The interviewer said there were a couple of rounds to get the winternship role