They give the coding exercise for one simple mobile application and said that it should not take more than 4 hrs and if it does then no need to add new features. I worked on basic feature which took almost 8 hrs and had no time to improve UX. I submitted the exercise and they get back to me saying that they have decided to move on. One thing I didn't get is what they are looking for exercise? I have the basic feature working bug free. The UI was decent. The UX was not bad although it could be improved but had no time for that. I believe Uber has product people working on UX then why they are looking for engineer who does great UX. Engineer is the person who will be converting product spec into working code. To evaluate or reject engineer based on incomplete UX is insane. I am glad that I did not wasted more time on that. Advice to interviewers: Change your thinking about engineer, you are hiring some one who will be engineer, not product manager with technical knowledge. Atleast he deserves the decent interview process. You can not waste anyone's 8 hrs on coding exercise and reject him not based on code or knowledge he has but based on UX.

Sorry, can't share that as I signed an NDA. However, I could share that there was an unexpected amount of emphasis on behavioral questions with convoluted interrogation as if I was a suspect.