I applied online. The process took 2 months. I interviewed at Bloomberg (Londra, Inghilterra) in Dec 2015
Interview
They have around 5-6 rounds, there are face to face interview, video conference call maybe, telephone call, also language test depending on your background. prepare more of reading the news and get ready for lots of random question in eco finance, capital market, accounting, trading, etc.
I applied through an employee referral. The process took 2 weeks. I interviewed at Bloomberg (New York, NY) in Aug 2013
Interview
Straightforward, need to understand financial markets and the news.
Would recommend reading Glassdoor's other questions and also speaking to previous employees first. A friend prepped me for the interview process. Simply a phone all and then in person interview and I was offered the job shortly afterwards. Overall, smooth process.
The process took 1 day. I interviewed at Bloomberg in Feb 2010
Interview
Group interview. Has a recruiter give quick intro into the job and the company, everyone gave a 3 minute self intro, and then there was a Q&A session. that was it.