Had a great call with the recruiter who wanted me to meet with the CEO. Had a call set with the CEO who never showed up on the zoom. After emailing and waiting on the call for 15 minutes, I finally left the zoom. I got an email response from the CEO days later saying that I should have been more patient, with no apology for the no-show. I asked about rescheduling and got a response from the recruiter with a rejection. Easily the most unprofessional interview experience of my life