I applied through a recruiter. The process took 3 weeks. I interviewed at Silicon Labs (Nashua, NH) in June 2019
Interview
1. Phone interview by HR and a Senior Engineer
2. Full day interview with 6+ engineers and mangers
During the interview, you will expect asking basic to advance questions from the following domain
Analog circuit, Digital design and Software(mainly C)
The good thing from the interview is that I got a lot of feedback from the engineer.