Uber Senior Software Engineer interview questions

One technical phone screen, an hour coding challenge. Then invited on site for a full day of interviews, about 5 or 6 45 minute interviews. Unfortunately I did not get an offer. They said I did great on the coding challenges, and great cultural fit, but they did not measure me at a senior for architecture. Difficult communication with the SF recruiter, no email responses for over 2 weeks after my on-site. I was impressed with the company culture there, and it was a beautiful work atmosphere.