I applied through an employee referral. The process took 4 weeks. I interviewed at Amazon (Seattle, WA) in Jan 2014
Interview
Two 45 min back-to-back phone interview. Asked conceptual and coding questions each. Three days later I got an offer by email. After making a phone call with my recruiter, I got the official offer.
Interview questions [1]
Question 1
Find the youngest common ancestor in a directed graph, where you can only go to a node's parent and cannot go back