I applied for an intern position in Boulder through their website, and the recruiter contacted me back within a week via email. I had one phone interview a few days later with an employee/engineer from the Boulder office. They were simple questions regarding data structures, algorithms, and some bit manipulation. He asked me what kind of data structure I would use to manage a contact list on a phone, given I'll need to be able to add/delete each contact and pull up information by the person's name or the phone number.