Pros
The people you will work with are amazing. The purpose and mission of the company are compelling. There is a strong focus on family and wellness, while designing for and relentlessly pursuing high performance. The pay is competitive. The clients are huge, impressive, recognized global names. Terrific potential for personal and career growth...rapid up-skill that you won't find in many other firms. Exposure to the biggest problems that companies face will expand your mind and thinking. Working here and being exposed to their product will change how you look at the world for the better, and open up new career paths. Subsidiary of a global think-tank with a compelling mission. Potential to grow your network is very high.
Cons
The company is trying to grow in many areas at once, which can lead to difficulty in prioritizing and focusing on the most important and actionable initiatives. Less-formal managerial structures can make it difficult at first for those who need a linear path to career growth (you need to carve out your own opportunities.) Resource constraints. If you're used to having large teams with large budgets, you will struggle with a more boot-strap environment if you cannot be entrepreneurial.