I applied online. The process took 3 weeks. I interviewed at Bloomberg (London, England) in Feb 2015
Interview
I went through three rounds (out of four). All interviews lasted less than 1 hour. The other reviews are extremely helpful in order to prepare interviews. I would just highlight how important it is to review asset classes basics (bonds, options, etc.), specially if you don't have a financial background. Also you should carefully prepare financial news as you will be asked to bring out a relevant topic for you or prompted to discuss one of the interviewer's choice. You should have a good understanding of the most relevant topics, such as ECB's QE (try to remember some figures and specific facts), and also prepare something more focused on the specific region you will be working for, e.g. if you are applying for an Italian speaker position, mention something relevant about the Italian market.
I applied online. The process took 6 months. I interviewed at Bloomberg (London, England) in Jan 2015
Interview
Phone interview
Just with a guy specializing in sales I think. Very fair and kind.
Tried to get the best out of me, prompted rather than attack. Overall he was very nice, they got back to me very fast with a response from the phone interview. I'd say financial knowledge is not essential, you'll just need to be able to show you're interested and can talk about other skills mostly sales.
I applied online. I interviewed at Bloomberg (Singapur) in Mar 2015
Interview
3 hour assessment centre. First, a group case discussion. Followed by, in no particular order, shadowing of a full-time staff, "phantom" (tending to a terminal and answering some questions asked), 2 face-to-face interviews and an in-tray exercise.
Very friendly interviewers and the whole interview process was very relaxed for me.