The process took 5 days. I interviewed at Citi in Dec 2010
Interview
I first interviewed by phone. then about a week later I had an face to face interview. It seemed to go well but then I received an e-mail that they are pursuing others.
I applied online. The process took 1 day. I interviewed at Citi in Nov 2009
Interview
I was asked why Citi, why you are unique compared to the other candidates etc, and a few technical questions about yield and bonds. They seemed ok, despite the rigorous online application, so I guess they asked most the competency questions there and wanted to know more about me.