The whole process was pretty relaxed and not intimidating. It seemed like they were already planning on hiring me even before my interview and that the one-on-one part was just a formality. There were two other people interviewing at the same time, and all three of us were hired. The math test was pretty tough without a calculator, but still just simple math. They called me when they said they would, two days later, and asked "when can you start?". Simple, quick, and painless.