I applied through college or university. The process took 1 day. I interviewed at Amazon Lab126 (San Francisco, CA) in Jan 2018
Interview
Two 45 min behavioral questions with current employees on the team. While not specific to the principles they were certainly implied. This was the 1st round with a 2nd round on site with 4 more behavioral rounds.
Interview questions [2]
Question 1
Describe a time you took a process that was working and sought a way to improve it further?