Thinking Big Software Developer interview questions

It was a panel interview with all three of the original partners. I was asked about my experience in software development and my skill set. I was given a basic coding assignment (FizzBuzz) on a whiteboard. The CTO walked through my process and solution, asking questions, calling attention to errors in the hope that I'd self-correct. After proving basic coding and problem solving abilities, I was asked to propose and discuss approaches to solve generalized and abstract problems, e.g. volume of golf balls inside a bus, etc. Overall, the interview was relaxed beyond the few classic start-up style questions identified here.