I was invited for an on-site interview for senior UI UX Design Role which was initially scheduled for 1 hr round that day. However, shortly after my arrival, they decided to conduct 2 additional rounds, extending the interview process to 4 hours continuously. I arrived at their office at 4 PM, and my interview concluded at 8 PM. Given my 3 YOE, I found it puzzling that they seemed to be seeking a senior designer, not even a mid-level one. Their HR department informed me that they would provide a follow-up within 1 week. Despite a month passing, I have received no call or follow-up from HR. I even attempted to communicate with them, but I was completely ghosted. I fail to understand the purpose of wasting 4 hours of my time for this On Site interview if they were simply going to disregard me without providing any feedback. Overall, my experience was very negative. If you are a startup or an established company, this approach represents a highly unprofessional way to conduct your hiring process and reflect on your organization.