Roku Sr Software Engineer interview questions

Lots of programming questions. I had a couple of Zoom/CodePair technical interviews, along with few hours of in-person whiteboard sessions. There was one interviewer that I felt I was on a completely different page from. I'm not saying they weren't sharp or friendly - just that we had this major disconnect when trying to communicate about the questions they were asking. This one was in-person, which was odd. I did my best to explain my thought process about what I *thought* was being asked, and asked several questions to try get on the same page as them, but it just... didn't work. Apart from that one, all the other interviews went smooth. The questions weren't easy, and for the most part they weren't things I had seen before - just lots of foundational computer science (algorithms, data structures, multi-threading), along with some more domain-specific questions (e.g. embedded Linux, virtual memory, compiler internals). I walked out of the interview confident - not necessarily that I nailed every answer, but at least that the interviewers considered me as a peer.