You have one or two phone screen interviews. Essentially the first in English and a second in the language for which you applied. If you receive positive feedback from both interviewers you will be scheduled for an onsite interview. In my case I initially had a single phone screen interview that went well. I was then scheduled for an onsite interview within a week. Then, I had an informational phone call during which my recruiter decided to add another phone screen interview before the already scheduled onsite interview. For this unscheduled interview, they didn't ask me my availability and simply told me the date and time at which I should be available. Unfortunately, this interview resulted in a negative feedback and they ultimately cancelled the onsite interview. I am not sure if this recruiting experience reflects Amazon's standards but it seems that there was some mismanagement here they should have never made me believe that I had a chance to have an onsite interview with them. I shortened international trip and made arrangements to be available on that day and they couldn't care less about that. Lastly, the company doesn't care much about you and once they toss you away, you have to chase them in order to get information. You should expect your recruiter or anybody at the company to only contact you as long as you are being considered. Should you fail one of the phone screen interviews, nobody at the company will have the decency to contact you unless you reach out to them.

I had 2 phone interviews. Then I was invited to the onsite interviews with 4-5 interviewers in Santa Barbara, CA. They asked me mostly behavioral questions and some knowledge base questions which was not too technical.