Had an initial recruiter call and three interviews set up- technical interview, culture fit, and a final interview. Had the technical interview and a call with a director for culture fit. The next day came around and so was finally was supposed to have a call with a senior engineering manager. He started the call 10 min late and then got an emergency ping and had to drop. Fine. Then, I got a call from the recruiter saying I didn't pass the first technical interview and so no need to reschedule. Just left a bad taste in my mouth knowing that I was about to go into a pointless interview.

They have sent me several questions, all of them could be answered by my CV which they didn't read. I answered them immediately. After a week they got back to me to ask me to answer the questions, and I told them I have already answered. They invited me to an interview. The interviewer was 20 min late! They asked me questions about the features of the latest update to C#, which was irrelevant to the position. The product they develop is a legacy "black box", without documentation, failed to deliver with two different teams. The interview concluded well, they seemed happy. After all of this they gosted me.