I applied through college or university. The process took 3 weeks. I interviewed at BlackRock in Feb 2010
Interview
Interviewed for Summer Analyst position in BlackRock Solutions. Interview was mostly math, computer science and probability. They had a very good approach: ask about the candidate's background and make sure he/she can talk cogently about all the math + computer science that was listen on the resume.
The first round interview consisted of 1 interview with a Director on campus. I was invited back for a Superday which was 5 interviews back to back - 2VPs, 2 Analysts and 1 Directory.
I got the impression that it was a great firm and people were very excited to be there.
Hireview is preparation and then one time recording, which is from memory 3 minutes long. There was only 3 questions for me and most of it related to the role instead of purely just asking why blackrock or why this role.
Interview question is straightforward, mostly is you need to describe detailed on behavioural questions, such as what will you do in certain situations, and your opinions on certain topics, you will be given 2 mins to prepare before the recording start
Interview questions [1]
Question 1
Describe a time when you have to make a data-driven decision
Started off with Hirevue, then proceeded to first round of interview, which was two separate sessions. After that, waited for about a month, then got the final round of interview.