I applied online. I interviewed at Amazon Flex in Oct 2016
Interview
Just have to sign up and wait for a back round check, then watch some videos on your phone about how to do the job. You can pick what city you want to deliver in and what kind of deliveries you want to do(prime now or .com)
Interview questions [1]
Question 1
Just need to apply online and have your driver's license and ssn and email address. There is no interview. You don't speak to a person.