The phone interview was not challenging.
On-site interviews are challenging, as they expect your code to be very clean and for you to answer quickly. If you share your thought process in a clear, concise manner and think quickly, you should do fine.
Their recruiters are pretty unresponsive. If you complete the interview and don't get frequent follow-ups, expect not to get hired.
I can't say because of the NDA.
The following metrics were computed from 3,728 interview experiences for the Google Software Engineer role in United States.
Google's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Google's Software Engineer interview process in United States.