I applied through a recruiter. The process took 1 day. I interviewed at Union Pacific (Ames, IA) in Mar 2012
Interview
Did an on campus interview with 2 of their associates. The application online was very long and detailed akin to applying for a security clearance. During the interview they asked very detailed questions such as experience with IT security and different publications that I read.
Interview questions [1]
Question 1
They asked if I knew certain industry standards and issues(e.g stack overflows).