Many of the classic CS interview topics, but since I was not applying for an entry-level position, there were lots of questions about my experiences. Tell me about a time when two problems had the same underlying cause, etc. Prepare a list of war stories ahead of time and practice telling them. When you get asked these questions, you can quickly go through the list in your head and pick one. There was one interview with a manager on higher level architecture (in AWS). I had no experience at large-scale like that but I applied what I knew and did fine. They understand that there are not many other places where you can gain that experience. The last interview was very hard and my brain was toast from the first four. Find the longest palindrome in a string, etc. I could only think of the brute force solution but he asked about run time, etc. Then some other weird questions. Pretty sure I got nothing right in this interview. Overall I was impressed by my interviewers. They were a bright bunch.