The interview process is very long and drawn out. I went through four different rounds over the course of 6-8 weeks.
The first round was pretty straight forward, just a phone interview with the local HR manager. I felt that part was pretty easy.
I did a personality test online and was called back a few days later to come in for an in person interview
I did a 3 part interview with different managers in the facility. Some of the questions were a little difficult, but if you remain confident and think quick on your feet you will be fine. It was challenging but a great experience. I definitely learned a lot that I can take with me into future interviews.
I felt like I aced the first two so I was feeling good about being called in for a 3rd interview. I had to travel about 90 minutes to interview at another plant with the regional sales manager and the regional HR manager. It was the classic episode of good cop, bad cop. The HR manager was pleasant but I was verbally attacked and borderline verbally abused by the regional sales manager. I was asked extremely detailed questions about projects and positions I had held over a year back. I did my best to answer the questions, but they were trying to catch me in lies and trip me up. Be prepared for anything in this round. They want to see how you act under pressure. I would advise you to bring any documentation to referred back in this interview stage. You may need to refer to it. Know your resume very well!
Surprisingly I got a call back for a fourth and final interview with the regional VP. It was over 2 weeks before I heard back so I'm guessing they had someone else as their top candidate and that person either bombed the final interview or chose to go elsewhere.
The fourth interview went really well. The regional VP was a really nice guy and seemed to really be interested in what I had to say. I enjoyed our conversation. I did well and I was extended an offer 2 days later over the phone.