I was asked technical questions, most of which were neither deep nor specific. They were mostly open-ended questions which a suitably experienced person can answer without preparation. My tip is that you keep talking, and they will take you if they feel like it.
A question on red-black trees, but I don't remember.
The following metrics were computed from 3 interview experiences for the Sandisk Senior Firmware Engineer role.
Sandisk's interview process for their Senior Firmware Engineer roles is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having mixed feelings for Sandisk's Senior Firmware Engineer interview process.