Applied online. Got an email from a recruiter who did a brief introduction/interview over the phone, because I wasn't living in the Triangle at the time. I had one interview with VP and supervisor. The VP and supervisor jumped into the interview without much chitchat, which was a little jarring. But I settled in once we got going, and they were both very nice and politely laughed at my "interview jokes". My advice: Know your strengths and your weaknesses well and how your past and current experiences apply to the job. Most of the questions revolve around those aspects. And relax and be friendly. Culture is very important here, so they want kind, smiling faces.