I applied online. The process took 1 day. I interviewed at Bloomberg (San Francisco, CA) in Feb 2012
Interview
Received a phone interview after applying online. First round phone interview was with someone from HR. She had to reschedule the phone interview with me day of because she had a meeting at our originally scheduled time. She then called me 20 minutes late (which is unheard of) for our actual phone interview, did not apologize for being late, did not give a reason, and proceeded to give me 10 minutes of her time before hanging up and said I'd hear back in a week. She seemed hurried and completely disinterested. Terrible experience, worst phone interview experience, and I did not expect a second round.
Was invited for second round to Bloomberg's NYC office for the position in San Francisco because it was closer to my current location. They paid for my flight. Day of interview, I first shadowed someone for about 30 minutes. Then, I had a teleconference interview with manager from San Francisco office and then a 1:1 interview with a manager at the NYC office.
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.
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.
2
Application
I interviewed at Bloomberg (London, England)
Interview
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.