Pros
Despite its tremendous growth, Uber has maintained its amazing culture. Everybody from the CEO to the newest hire needs to be and is encouraged to be an entrepreneur. I have never seen so much ownership and responsibility placed in every person in an organization. Read any job posting - they sound too good to be true, and yet they are all incredibly accurate. The bar is high, expectations are high, and that is incredibly empowering. The work we are doing is changing the world before our eyes, and once you're here you realize that the existing hype isn't even half the story. Hang on - you'll remember this job for the rest of your life.
Cons
This job will be your life - not because your boss is counting your hours, but because you're addicted to Uber. If you're not, don't apply. You're going to be really unhappy and burn out fast. Career opportunities are abundant but not readily identified for you. I couldn't tell you what my next role could be - but I think there will be one. This can be stressful, and it means you need to blaze your own trail a bit.