Interview Pointers For Design/Architecture Platforms Team at Google.

Hello everyone. My friend recently recevied an interview call from Google for their design and architecture platform team. I am posting on her behlaf and looking for pointers for the prep. And if anyone works in that team would have any insight on the work and their experience working on that team I would be tremendously grateful. Just a note; she has more of a hardware background and hence pointers from that angle for the prep are deeply appreciated. Thank you!