Three phone screens:
One technical interview (lot of SystemVerilog/UVM questions). Scoreboard and past work experience; this was tough.
Two manager/technical phone interviews: Test planning, previous work experience, interests, and general questions.
After three phone screens, I was invited on-site.
Four rounds:
I was in a hurry to get an offer because I had others in hand, so I forced the HR to give a decision immediately. I got the offer the next day, with good pay.
The following metrics were computed from 6 interview experiences for the Nvidia Senior Hardware Engineer role in United States.
Nvidia's interview process for their Senior Hardware Engineer roles in the United States is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having very good feelings for Nvidia's Senior Hardware Engineer interview process in United States.