Uber Senior Software Engineer interview questions

Promptly after submitting my resume recruiter contacted me by e-mail and arranged the first screening interview. It was a pleasant 30-minute chat about the company, where it is going and my experience. During this interview we have agreed to set-up the first on-site interview. The on-site was a 1-hour coding interview using HackerRank.com to quickly assess my coding skills. I had to remind the recruiter about myself to get the 2nd onsite interview, which consisted of 5 sections: chat with hiring manager about the teams; bar raiser interview over teleconference; 2 coding interviews (more difficult); architecture and design discussion.