Short general behavioral first round interview with a HR person (very nice and patient). Second round was with a senior engineer. He had no idea what he was doing (I believe new to the company) - not well organized and a bit rude. Apparently there was another engineer supposed to ask questions but never showed up. The interviewer asked about my experience and explained a bit about the position, but not in much detailed. At the end asked me to write a letter about my takeaways from the interview (a bit strange) and send it to him. Overall waste of my time and his as well.