Uber Software Engineer interview questions

Very long and inefficient process consisting of just 3 phone interviews over about 3 months... Had to reschedule a couple of times because the interviewer didn't called me. You can tell that the company is hiring aggressively. Questions were generally pretty easy, but they focused on the design/implementation. The recruiters are much more responsive after you pass the 3rd interview and are given an offer, which is very competitive for Silicon Valley.