Initial communication and coordination of the interview was great. I had two 1:1 interviews with mid-level software engineers. The interviewers were friendly, and both interviews were challenging but went well.

I was called back for one more interview with a top-level engineer/manager. I struggled a bit on his technical question, but he was abrasive and condescending in response to any of my questions. He had the attitude that since I didn't get the solution immediately, I was wasting his time. This attitude lasted the rest of the interview.

I turned around several times while coding to see him reading his phone, not even paying attention. I was pretty close to asking to end the interview, since it was clear he would rather be somewhere else. I decided when I left that, regardless of the overall outcome, I wouldn't want to work under this person in any capacity.

I never got a response either way from HR, which was icing on the cake of me never wanting to work there.

Be prepared to talk in depth and code anything on your resume. They dug deep on some topics.