So . Engineer took my phone screen. He asked to write merge sort. I nailed the program. I completed even before time. Ran code for all edge cases it worked perfectly fine. Then we chatted about product and its competitors. He seems to be very impressed that I am happy user wifi mesh technology. He liked that I am aware of this product space and he said i could be great fit in the company. 2 days later i receive standard reply from recruiter that I was rejected. He did not give any feedback. I guess Interviewer rejected me because I am using Google wifi and not eero . LOL. Why are you taking interviews if you dont want to hire? Please STOP wasting time of candidates.

~5 rounds on site and 2 phone screens. No strange or tricky questions instead focusing on practical stuff. People are generally nice and not stuck up. Make sure you do well on the "culture interview".