Pros
Opportunity to build a company and technology. People are smart, dedicated, and hard-working. Being global and having global investors at such a young age is a huge advantage. The constant forward momentum is refreshing coming from a large, multinational. The speed of change can be challenging to deal with but it's also exhilarating to be part of something that could potentially be huge. Given the market potential, this could be a multi-billion company in <10 years.
Cons
It's a start-up, so if you're not able to deal with ambiguity, directional changes, and the speed at which things can change, this is not the place for you. The workload is considerable, but it's also squarely focused so you can see how your work fits into the company's future success. If you're comfortable with change, confident in your abilities, and willing to learn new skills including being able to pivot quickly, this is the place for you.