There was a hiring manager screen interview(15 mins). It was mostly about adimistration info(start date, compensation level etc) and small optics quiz. After that, there was a take-home assignment of 1 week. Upon reviewing the nature of the homework, I declined taking it and rescinded the whole interview process. It is the most shocking interview process in my life. The assignment really feels like their internal projects. I requested for proper contract of the IP protection and compensation for my work, but they refused. So I declined taking it and rescinded the whole interview process. I think I dodged a bullet of doing free labor work for them. Those who are reading this interview review, avoid this company at all cost.