Was approached by a recruiter, who forgot our first phone appointment. After a brief conversation, a phoner with the hiring manager was set up. Hiring manager couldn't make that call, so hiring manager's boss ran the phone interview, which was cursory and somewhat uninformative due to lack of familiarity with the day-to-day of the role.
Was brought in for an in-person interview with 5 people, complete with presentation as others have mentioned. Of the 5, the hiring manager was 15 minutes late for my interview and left after 5 minutes, and promised to return for my presentation but never did. Another interviewer had no idea what position I was interviewing for. All made multiple references to being "a start-up culture", despite working for a company that is decidedly not a start-up. I believe they believe "start-up culture" means "overworked, understaffed, and miserable but we have SNACKS".
Another phone interview was set up for another position. That hiring manager blew off that phoner.
Another recruiter reached out to explain there has been a lot of confusion about what position I was there for, but all agreed I was a good company fit and they would contact me in a few weeks.
Total chaos and a barely apologetic waste of time.