CTO was the interviewer. Very rude and negatively criticised every credential in my CV. Not very professional and all of his questions were very personal (not professional). It was obvious that they just wanted to put you down in a condescending manner. The company is not a corporate firm but they acted even worse than a corporate firm.

First round with HR. Second round with the tech lead & engineering team manager, with a few more senior engineers joining the call. It was during covid so the interview was via Google Meet.