The process was incredibly unprofessional. I had an interview with HR, and after a few days, I was informed that I was moving on to the manager's interview. The manager's interview went very well, and he even invited me to an on-site case study, saying the HR representative would give me the details. That never happened. I sent two follow-up messages, and they didn't even bother to reply. I was completely ghosted. Please don't do this to candidates; it's extremely unprofessional, and it costs nothing to simply reply that you weren't selected.