Pros
Fortinet is a family where you happen to work, do your best and always find a tip to improve. As a fast growing company, there are several career paths so people can grow and improve their careers and focus in performance. This is not only available, but encouraged by managers. The engineering work dynamics is by far, the most challenging and rewarding of all IT Security Industry, where you can not only perform your role, but write new roles if aligned with the company targets.
Cons
Intense, passionate and demanding work, normally creates family cracks that must be addressed properly. Even if family-job balance is encouraged by managers, I think this topic is unavoidable in the industry, due to the nature and impact of IT Security everywhere, at every time.