Airware C# Software Developer interview questions

The initial phone conversation was really nice with the HR person. The first coding interview I had went well for the first half but took a dump the second half. I was first asked to do an easy fizzbuzz problem. The next question they asked was to find the maximum subarray given an array of numbers. They went from asking a stupid easy question to asking a pretty hard question. About a week later I got a call from someone I haven't ever talked to saying they were looking for a more experienced developer.