Interviewers were unprofessional and unethical. They did not even show up on the scheduled time. One of the person re-scheduled/cancelled the interview 5 times, sometime just before the start of the meeting.
I suggest not to interview at this company, you would save your time and efforts
The process for me was as mentioned below:
1. Technical Test
2. Interview with CTO (they never attended the meet, later heard that they were fired)
3. COO
4. Head of Product (extreme unprofessional I have ever met)