Terrible experience overall.

HR was claiming that they are the greatest company on the planet and I should be so lucky to get the opportunity.

Each and every engineering person I met over 4-5 rounds, not a single brown person. It felt like they just wanted a white person on their team.

Good that you worked at Google or whatever, but you can be humble. Some of the interviewers were utterly rude and I hated every minute of my conversation. Funny thing is, I never applied; their recruiting team reached out to me on LinkedIn. Really bad experience.

Mars Rover - Really Stupid Coding Question

For system design, I was asked to discuss a URL shortening service - very basic.