Six months of repeated emails telling me that they were interested and would set up an appointment right away with no actual follow-up. I was completely strung along for the entire process with empty promises. I consider this highly unprofessional behavior that casts a pall on the entire company.
I applied through an employee referral. The process took 1 week. I interviewed at EY (New York, NY) in Jan 2018
Interview
On schedule and well executed interview process. HR makes you comfortable and discuss in details about the motive for move. There are at least 3 interviewers excluding HR on Super Day. Each gets 30 mins and they keep strictly to the schedule.
I applied through an employee referral. The process took 1 day. I interviewed at EY (Londen, Engeland) in Mar 2013
Interview
Relatively straightforward, not too taxing, were two interviews lasting just over an hour each, have had much more difficult ones. I don't think you need to prepare anything particularly, just be prepared to talk through your previous role cogently.