Uber Data Science interview questions

I received an interview via employee referral. First, I had a phone screen with technical recruiter who just discussed my resume and asked some basic questions regarding my skills, programming languages I am comfortable with, etc. At the end of the phone-screen, they sent me a technical challenge. Question 1: SQL queries. Question 2: KPI metric design/evaluation. Question 3: Short programming assignment involving a ML question on a synthetic Uber dataset. After technical challenge, they scheduled another phone interview with a data scientist. In this interview, we mainly discussed my research project because it was closely related to Uber. We went into details of somethings. Overall, it was a very nice discussion giving me an insight into team structure and kind of work each team is doing in their Seattle office. I was offered an internship after this phone interview. Throughout the interview process, I received very good feedback on how I did in each round, and the turnaround time between each interview round and their feedback was impressively small. It was a pretty fast process. Overall, it was a pleasant experience. I chose to decline the offer, as offer negotiation failed.