I applied online. I interviewed at Costco Wholesale (Westlake Village, Los Angeles, CA) in Apr 2017
Interview
it was pretty much standard. Only advise i can give is to apply in the summer, they hire fewer people but they keep a larger percentage of them as oppose to the winter.
The interview process included scenario questions; what would you do if you were in a blank situation, how have you handled a blank situation in the past, etc. They really want to connect your answers to your experience and how you learned from them.
I interviewed at Costco Wholesale (Hampton, VA) in Sep 2020
Interview
It took about two weeks for a phone call to set up an interview and after that it was quick and easy. the whole process was about three weeks. great experience.