Epic Technical Problem Solver interview questions

The interview is broken into three parts. The first is a phone interview, where they asked questions based on your resume and previous experience. This was very relaxed. Next, they set up an online skills assessment, which was broken into two parts - Logic, and Programming. The Logic section tests your ability to learn new programming languages on the fly, and is very easy. The programming section consisted of 4 challenging questions. I was recently contacted to set up an onsite interview, which I will attend next week. From what I hear, this is casual as well.