I applied through university. The process took 3 weeks. I interviewed at Wolfspeed (Durham, NC) in Mar 2011
Interview
The first and second interviews went very smoothly, general HR questions from the first interview, a lot technical questions from the second one, but the managers are all very nice. However, the third one, which is the big manager, was very impatient and could be rude at some points. He made me nervous and lost all the confidence after 10 min of talk over the phone. I wasn't at a good condition either, so I got rejected after all. But generally, not a very difficult interview, if I can do better on the third one...
Interview questions [1]
Question 1
Describe how MOSFETs work. (I prepared lots of LED stuff, but he started the first question with MOSFETs, which I learned two years ago...totally unexpected)
Normal tell me about yourself, why do you want to work here, problem solving example, technical question specific to the area you interview for. HR phone screen, manager phone screen then in person interview on site
Multiple interview rounds, multiple interviews with heads of different departments as the last round. Interview process started with a phone recruiter, followed by a hiring manager, the Hiring Manager's manager, and then a final round with all the heads of the departments independently (4-5)
Interview questions [1]
Question 1
Technical Questions like about SPC, Troubleshooting tools, Working with multiple cross-functional teams, high-volume manufacturing environment.
First was a 15 minute phone call with HR followed up by a 45 minute interview with hiring manager. One more round of interviews after this if I had gotten through