Initially I was contacted by the recruiter to let me know I was identified as a possible match and to pre-screen me. After a cordial and successful call, a phone interview was set up with the hiring authority. That call was much more pointed and dove into my resume and experiences very thoroughly. After that interview I was scheduled for an in-person presentation/interview. That's where it got challenging. I had to put together a presentation (mini-business plan) and present to a panel of 5 for 45-minutes; 15-mins more for questions. Then it was one-on-one interviews with each of the five people in the panel for 30 minutes each, all back-to-back. The panel consisted of two respective department heads and their staff that I would be working alongside and/or coordinating with. Throughout the entire process, everyone at SunPower was extremely professional, courteous, and timely. All appointments and calls were on-time. The only delay I received was in the final decision process to extend an offer or not -- the process was delayed about a week while they deliberated. The Richmond office is a beautifully modern glass-roofed brick warehouse type building. The employees were in open spaces and dressed in jeans/pants and casual shirts (some in more business-casual). Although I was in a suit for the on-site interviews, I was told the casual business attire is standard fare at that office. The HQ office in SoCal is said to be much more corporate in appearance and dress code.