I had a call with the HR and we discussed about the job requirements and I was asked about my background. I was tested on some questions like the cultural fit and 2-3 technical questions.

I did four rounds of interviews, eventually meeting with the VPs and board members. At the last interview was told I would hear back very quickly. I did not hear back quickly and emailed them to ask if there was any update. I then received a generic rejection email. I asked for feedback about my interview process and received none, so I have no idea if my rejection was based on my skills, experience, or interview answers. Not professional, very unimpressed