Amazon Software Engineer interview questions

Had 3 technical phone interviews followed by an onsite in OC. Amazon flew me out and I had full day of interviews including a lunch interview. Interviews were mostly technical but included OOP design and team skills. I had originally been interviewing for a SDET position in Seattle but after expressing interest in possibly working in other locations including OC, I was switched to applying for an available position there. Most communication was via email and I was informed whether I would be continuing to the next step within 4 business days of my interviews.