Google

It gave me two phone call interviews. Then they decided to give me an additional phone call because I finished the coding almost at the allotted time. For the third interview, I solved it but did not do very well.

Coding problems, then system design questions. Walk through your solution. Clarify with the interviewer. System design questions: How would you build a hypothetical architecture? Discuss the pros and cons of your chosen solution.

Around 5+ hours, with a few minutes in between sessions. Pretty straightforward, nice people. It's paramount that you ask questions and keep the interviewer involved during the process. If you have to speak your thoughts out loud, do that. It is be