Interviewer is really nice. First we both introduced ourselves. I talked about my previous projects and what my area of interests are. Hey asked me to explain my project and then got to some basic circuit and digital logic problems.

two phone interviews. First talking to the project host, who asked about some general technique questions such as how to design IC timing, or how to solve a specific security problem. Second interview was talking to the another engineer in the same group, more specific technical questions, especially coding on a google doc. Both interviewers are friendly, they will explain their solutions after each question.