Pretty intensive experience. But, definitely worth it! The first round was a hiring manager call. He asked in-depth technical questions centering around basic OS/Web Dev/MySQL concepts. You also talk about your past projects. If you pass that, you have a really good chance of getting it. The final round is an interview panel where there are 6-7 engineers watching you and asking questions. That was pretty intense as you might imagine because they're constantly asking you follow up questions. They ask about general concepts and coding questions. Make sure you bring your computer with you for this round to showcase your project (the hiring manager didn't tell me this! :( ).