I applied through university. The process took 3 weeks. I interviewed at American Express (New York, NY) in Feb 2015
Interview
One on campus interview with two representatives @ 45 minutes each, and then a superday at the office with two more representatives. Not really many technical questions, but you do need to tell a good story and be a sociable person. They look for outgoing people more than someone that will sit and code all day. They are also very quick to invite you to following interview rounds and job offers.
Interview questions [1]
Question 1
What is the difference between a charge card and a credit card? Which card realizes losses faster in a poor economy?