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.

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.