I applied online. I interviewed at BlackRock (Londres, Inglaterra) in Feb 2016
Interview
Automated video interview, in person interview then final round 1 on 1 45 min interview. The interviews were competency and exploring more technical/research aspects of my degree (Engineering), some of this was quite challenging. All technical/coding skills questions were fairly easy. They answered all my questions about the role and even arranged a confidential talk with an analysts who had done the internship before, to help me decide between two offers I had. Everyone seemed friendly but very smart.
Interview questions [1]
Question 1
Run me through the processes involved in a simple perceptron neural network.