I applied online and was initially contacted by HR to set up an interview with the hiring manager. The interview was conversational with very standard questions on my experience, my style, etc.
Hiring manager asked me if I was interested in moving to the next phase of the interview process. Told me it may take a bit longer because the HR person was out of the office for the week and he'd be out the next week.
I reached out to HR when I was told she'd return to the office to express my interest in the role and to find out if the position had been filled. I heard nothing, which I found to be highly unprofessional (and doesn't speak very highly of the HR dept).
I finally reached out to the hiring manager was told told that I had basically slipped through the cracks due to the HR and hiring manager PTO. He did own up and say that it was no excuse but that the role had been offered to someone else and accepted.
Message to an unprofessional HR: I'm fine with a company selecting another candidate but at least have the professionalism to reach out and let candidates know. You are the initial face of the company and this kind of behavior makes me question the professionalism of the company as a whole. Do better.