I applied through university. The process took 1 day. I interviewed at Citadel (Chicago, IL) in Oct 2009
Interview
Gave resume on campus ..interview are simple ...need to convince you r interested in finance . People (HR) seems tough n arrogant ..people seem to work hard ..
Online assessment with 3 coding questions on bfs and stacks etc.
First round on a simple coding question with some basic CS questions on top of it and also asked many CV questions and motivations
Did not proceed after this round
I had an HR screen where they asked about my experience at my previous company and to prepare for C++ to talk with the hiring manager. They asked about why I got laid off at my previous company.
Application
I interviewed at Citadel (Hong Kong)
Interview
OA then phone interview, discussed about experience, coding rounds, and some open ended questions afterwards. The last 5 - 10 mins was for interviewee to ask questions back. Didn't pass this round :(