I applied online. The process took 1 day. I interviewed at Bloomberg in Jan 2011
Interview
The phone interview questions are well covered in this site already. After passing the phone interview you will get invited into the office for a day to shadow and an interview. The office atmosphere is very delightful and full of energy. Then the interviewer will pick you up and head downstairs for the interview. People on the sales and analytics floor were helpful and bright. Questions include what is the difference between equity and bond? How will you explain credit default swap to someone who has no knowledge of finance? From shadowing what aspect of the job do you like and what do you think will frustrate you? Basically they test your problem solving ability like randomly giving you mathematics or situational questions; and also competency based questions. Expect anything and everything.
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.