I applied through a recruiter. I interviewed at Optiver (Amsterdam) in Mar 2019
Interview
First step was online coding. It was 48 hours, and in my opinion, with very good selection of problems. Second step was a review of solutions. Then onsite. It was 4-5 hors interview with different teams.
A bit anxiety inducing, there were two developers observing and asking questions. Real-time problem solving required, conducted on Hacker Rank virtually, video and mic enabled - quite nervewracking to say the least
I had one round, which was an online HackerRank test. I wasn’t able to pass all the test cases, and as a result, I did not progress to the next stage of the process.
A lot of interviews. Started off with a call, then some online tests. Then a technical interview. Then a live coding interview along with a architecture interview. Last step would have been final day interview but I did not get that far.
Interview questions [1]
Question 1
How many bits do you need to store a number up to X. And how can you represent that.