I applied online. The process took 1 week. I interviewed at Bloomberg (New York, NY) in Apr 2016
Interview
phone interview -- not very specific or conversational. very formal, asked a lot of questions about the logistics of the role, and its location. The role was really a help desk role. The interviewer didnt seem very friendly, I am sure he does a lot of these interviews so it is understandable.
Begins with a personality assesment that also includes puzzles meant to test pattern recognition. The assesment and the personality quiz takes about 30-40 minutes and requires no preperation before hand.
First was Hireview, 1 Hour interview with two team leaders, and assessment centre, consisting of tests, networking, and a final round interview with two team leaders from analytics and sales departments respectively.
Multi step interview process, they have you submit a recorded video interview, then you get selected for a virtual super day where they interview a bunch of candidates at once, then you get an in person. Know about finance and know as much as you can about Bloomberg and its business. Have a good take on AI in finance.