I applied online. The process took 3 weeks. I interviewed at Optiver (Chicago, IL) in Sep 2016
Interview
Started with a brief phone call which ended with being given a hacker rank challenge. Completed the hacker rank challenge and was asked to come onsite. The onsite interview started with a code review of my hacker rank code. That was followed by a design session on the whiteboard before lunch. After lunch I met with a hiring manager and had a chat with the CTO and CEO.
Interview questions [1]
Question 1
Describe how you would store and sort the price of items coming from multiple "exchanges". Write code on how to do this.
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.