Pros
The company is growing quickly and investing in new talent. Having been at the company a while I fully appreciate this and if you embrace change in a fast pace environment then you're all good. The earning potential is great if you're driven and will go the extra mile. If not, then you'll get by OK. Advice is to dive right in and get to know people across the business - it will help you.
Cons
Due to the growing nature, it's sometimes hard to see the wood through the trees and where you're going next. If you know what you want to do, make sure you make it known to your manager. Of all the people and managers I've met in the business - they will do their best to help you if you work hard. The cons go away if you're hard working and are vocal about what you want to achieve.