In Sophia hard interview are really technical ones. All different subject can be treatee. Interviers are expert in many domains and you can't be give an appoximate answer. Preferable to say I don't know instead of trying to find ( invent) a solution :-)
The following metrics were computed from 1 interview experience for the Arm Staff Engineer role in France.
Arm's interview process for their Staff Engineer roles in France is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having mixed feelings for Arm's Staff Engineer interview process in France.