Uber Software Engineer interview questions

Applied online through their career section. Immediately got call from HR (in an hour; They are pretty efficient). They asked if I have any open source projects that they can take a look at. I sent some of my open source code but they wanted to see some concrete. So they sent me coding exercise which I finished in a week (It was simple exercise developing web app). Again got call from HR the next day saying they liked it and wants to talk further. Had another phone interview with the engineer. It was very basic interview with questions like what are you working on, why are you looking to move etc. (nothing much technical). Then interviewer asked me if I am open to come for onsite interview. They scheduled onsite interview immediately. Onsite was tough with 3 technical interviews testing my coding skills. I know i didnt do well in 1 interview (some rude guy with european accent -- as someone said earlier about him in another review) but other 2 went all right. Next week got rejection email saying didnt meet the requirements. As far as company is concerned, it looks on the right path with lots of talented people around. But its not the best I have seen. If you are interviewing for the engineering position, read and practice system algorithms (especially caching related)