I applied online. The process took 1 week. I interviewed at Bloomberg (New York, NY) in Jul 2011
Interview
I applied directly online at Bloomberg's career website. Heard back the next day to schedule a phone interview (great HR!). The interviewer was very nice and sounded enthusiastic about the company and what it does. She started off asking about what I know about Bloomberg, the position, and why do I want to work for Bloomberg. Lets me stress again: What do you know about Bloomberg, what do you know of this position, and WHY DO YOU WANT TO WORK FOR THEM. She than asked pretty specific questions off my resume; how my previous experiences applies to the position, if I had any previous sales experience how did I managed a difficult client, and why I quit my previous position. She didn't ask me any of the usual interview questions, she pretty much led the entire interview, so your mileage may vary.
You have to convince her why you want to work for Bloomberg and why you want to work in Sells. I wasn't very enthusiastic about being a sells person as this program apparently is a dead end from what I hear.
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.