The first round is about getting familiar with you and your past experiences. And you will also get some extended question regarding your answer. The whole process is about around 45 minutes.
I applied online. The process took 3 weeks. I interviewed at RBC (New York, NY) in Aug 2018
Interview
Applied online and had one phone screen and then a superday in NYC. HR was very helpful and timely. There was an education day where they described the Quantitative Trading and Research Group's activities. The next day was a standard superday with four back to back interviews. Superday was about 2.5 hours long. They got back to me the next week with the offer.
Interview questions [1]
Question 1
For the phone screen I was asked to pick 2 out of 3 categories: probability, algorithms, logic.
For the superday, questions were about past projects, as well as technicals in probability and algorithms (think bayes theorem and leetcode). Also a couple of brainteasers.