I applied online. The process took 1 day. I interviewed at Bloomberg (New York, NY) in Aug 2009
Interview
I was initially contacted by a woman who worked in the analytics department. We set up a phone interview for the following week. She seemed very friendly through our e-mails, but I did not quite know how to prepare for the interview. When the interview came, she was very friendly on the phone as well. She asked basic background questions about my resume as well as the standard questions you get in an interview (i.e. Why Bloomberg? What interested you about the job?)
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.