Work hard, play harder and enjoy the challenge!
Pros
Working with some of the latest and best technology whilst surrounded by world class engineers and data scientists allowed me to learn and be challenged every day. Even though the company was getting bigger and bigger, the culture is still like a start up, but with the stability of a bigger company. Projects are really exciting and will certainly challenge you. Awesome Hackathons. Was pushing code in my first week and able to lead a team within my first year.
Cons
They are still some teething issues which they are experiencing because of the rate they are growing as a business, but it's to be expected with any company growing this quickly. It would be good to be able to contribute more to the open source community, but I understand this is difficult because of the competitive nature of business.