I applied through my university. I went through two different interviews, each 45 minutes long and really close together. They both ask you the typical interview questions and they both focus on your resume. Both interviewers were incredibly nice. They both try to push you in the right direction without giving away any answers or even partial solution. You need to seem genuinely interested, and for the most part, you actually will be! Don't be afraid to ask questions, don't be afraid to ask for input, but never expect a solution. I won't post any of the technical questions they asked since it's a lot better to train yourself for the possibilities instead of specifics. In general, I got asked questions that were super easy to wrap your head around, but had many possible solutions which could be easy or hard, depending on the route you might of wanted to take.