Initial Zoom interview went really well, and then they invited me in for an in-person interview (which I thought was slightly unusual given COVID). Very few people at the office were wearing masks, which I found to be very concerning. I was interviewed by two individuals separately, both interviews being very basic and easy, and was offered the position. However, after notifying the company twice that I was not going to accept until I received an offer letter (which they told me they were going to send via email), I never heard from the company again -- I never received the offer letter nor did I ever receive another email or phone call from them. It was overall really unprofessional.