Two phone interviews were conducted.
First, I spoke with the project host. They asked general technique questions, such as how to design IC timing or how to solve specific security problems.
Second, I spoke with another engineer in the same group. This interview focused on more specific technical questions, especially coding exercises done in a Google Doc.
Both interviewers were friendly. They explained their solutions after each question.
Basic Verilog coding on Google Docs.
The following metrics were computed from 4 interview experiences for the Google Hardware role in United States.
Google's interview process for their Hardware roles in the United States is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Google's Hardware interview process in United States.