I applied through an employee referral. The process took 1 day. I interviewed at Merck in Sep 2014
Interview
First, I had a phone interview with the hiring manager, then I was brought in for an on-site interview at West Point. I gave a 45-minute presentation in the morning, then went through 45-minute 1-1 interviews the rest of the day. They asked HR questions, technical questions, and were generally just trying to get to know me, and me, them.