I applied online mid January and received a phone call mid February around 6:30pm on a Friday night.
Here are the steps that followed:
1) Sunday night: 5-10 minute phone call with someone at the Uber office I had applied to, general background questions, are you eligible to work in the United States etc. The person I spoke to also asked right off the bat what I was looking for in salary and stated that they had been hiring people between the $60 - $65K range, and that number was implied to be rather inflexible.
2) Tuesday: Two hour timed analytics test, completed online. You download two CSV files and use that data to answer 28 multiple choice questions. Twenty of the 28 questions had to do with straight data analysis (which 10 hour span in the course of two weeks had the most requests), while the remaining eight were a bit more interpretive (which of the following metrics would be most valuable for determining demand). The final four questions were free-form essay answers. Ones I recall are: Write a letter to drivers (can be for an upcoming holiday or just a general newsletter), which of two given bonus structures would be better in incentivizing drivers to work (fixed per ride, fixed per hour, variable but a minimum of rides required). I would say I am pretty good with Excel and a fast writer and I finished in about 1 hour 45 minutes. There were only about 3 questions that were very difficult.
3) Thursday/Friday: Two 20-30 minute phone interviews with members of the Uber team at the location where I applied. The first 10 minutes or so each time was comprised of the general tell us about your resume, why do you want to leave your company, why Uber in particular type questions. The next 10-15 minutes had questions like how would you sell an existing taxi driver on using Uber (biggest one was safety), why don't taxi drivers like using credit cards (taxes, a cut of the money gets taken out by processing fees, they don't get the money right away like cash) and some other questions that I can't recall. The last few minutes are opened up to the candidate to ask them questions.
4) Following Wednesday: Two hour interview at the Uber office consisting of four 30-minute panels. Each panel was 3-4 people asking me questions. There were at least three other people being interviewed for the same position concurrently, so the panelists rotated between us. Mine was conducted inside a room full of random Uber-related supplies and storage units. The interview took place from 6-8pm on a Wednesday night, which seems a bit asinine given that most people applying already worked a full day beforehand but perhaps Uber wants to see how candidates perform when they're both tired and stressed, who knows. In each panel maybe 2 minutes are devoted to hearing about you as a person or candidate (tell us about your resume... hmm I see here you've worked for X for Y years, tell us about that) -- after that they jump right in to questions. There is little to no time to make a connection with your interviewers, it's really all about being able to answer the specific questions they ask. Despite the fact that I heard over and over again how everyone who works at Uber came from other industries 100% of the questions were about Uber-specific processes or items, there was not a single general aptitude or skills question until the final panel asked "Tell us about a project you worked on that you were proud of," or something to that effect. See the "Interview Questions" section below for examples.
At the end of one of the panels, almost as an afterthought, the last question I was asked was: Tell us something you're passionate about. I thought, stupidly, that this was a genuine attempt to get to know me as a person so I answered with a legitimate answer -- let's say it was fine dining. Instead of the expected reply prompting me to share a human anecdote or a commonality between the interviewer and myself he replied "OK great, make a PowerPoint presentation about fine dining and send it to me by <looks at watch> 8pm tomorrow night." I asked for more direction and was told, essentially, sell me on fine dining. I wasn't told if this was supposed to be a test of my presentation skills, sales skills or just a signal that I was devoted to this job. I have a real life with other responsibilities, so I spent about 2 hours the next morning before work putting something together and sent it in.
The next time I heard from Uber was 5-6 days later I received a generic form email at 11pm informing me they'd decided to go in a different direction. I was not particularly inclined to inquire as to why I was not selected.