Backend Eng applicants have rated the interview process at Google with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 61.9% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -
it was very structured, interviewers were very nice and patient, each interview took about 45 minutes and I had about 5 interviews plus lunch with another person, they were all very nice but didnt ask a single behavioral question, just went straight into coding