The role and company seemed great and the first two calls with them were really promising. I was then brought in for a four hour onsite. The first portion was a deep-dive on a project I had worked on, this was normal except the interviewer was a lot more nervous than I was.
The second interviewer is where things got very weird. It was supposed to be a behavioral interview with the director of engineering. The director came in, I introduced myself, he walked past me without shaking my hand and didn't introduce himself. He sat down at the furthest end of the table and just said, "I'm the co-founder and director of engineering" then went silent. I took that as my turn for an intro and proceeded to give a brief career overview. Before I could get very far in the intro he interrupted me and said, "yeah that's really vague, what did you actually do?" The next 30 minutes were filled with the unspoken expectation that I lead the interview and his increasing frustration that I wasn't leading it the way he wanted. At one point he pulled up the website for a company I worked for three years ago and asked, "why can't I see any of the features you're describing?" and began criticizing the site design and functionality. Finally it came for for me to ask him questions. I asked, "what are some things the make your day to day difficult and challenging?" he answered, "Communication. My job is extremely hard when my team drops the ball on communication." So I naturally followed up, "As a director, how are you solving that?" he responded, "You don't solve that. Humans are not able to communicate, it's an unsolvable problem. I just hire people the never have to communicate and just get the job done." The entire session a range of miro to macro aggressions topped with some Elon Musk toxicity.
I had learned all I needed to know about the company at this point, but I finished the onsite for the practice. The next session was a basic white boarding system design interview. The interviewer was pretty junior, but the overall session was fine.
The day ended with a very awkward team lunch where I sat at a table with the first, nervous interviewer and a random assortment of employees I hadn't met. No one said a word to each other.