Insane disregard for your time and energy. After 2 months, 3 interviews (only 1 directly with him), multiple follow up emails, an offer letter, then trying to negotiate, he let me know that, actually, they don't have the volume to hire. He dragged the process out for as long as possible and was unresponsive or cold every step of the way. His responses were consistently low effort and delayed, and he was very unfriendly in the interview. Can't say I've ever experienced this little professionalism and consideration in an interview process. Run.