Pros
Working for a company like this is really a once in a lifetime opportunity. The pace at which they are trying to grow is insane and presents you with some really unique opportunities. They are playing in a space no other company is, which is exciting to be a part of. - You are working with big, well established customers - Some of the smartest people I've worked with in my career - Because it is growing so fast, there is great opportunity to innovate and implant your mark on the company - Good progression opportunities
Cons
Typical cons with a start-up/scale-up. - There is a lack of structure in places where it is needed. - The work hours can also be tough as the company tries to grow as fast as possible. - You are juggling a lot of things at once, and more often than not helping out with work that is outside your defined role profile (which also has its benefits)