Pros
Great salary, great benefits, generous RSU package. They are an excellent SMB (mid-market) product. They have low pricing so they win a lot of deals based on price.
Cons
Fortinet hires from a lot of tier 3 and 4 companies. Their product shows it. They excel at mid-market (branch office) deployments. They are not Enterprise ready and even further (3-5 years) from data center adoption. Unfortunately, "They" think they are there now. This means their sales goals and numbers are very unrealistic. They are a "family company" with many friends and family of the CEO at or near the top. They are extremely frugal. When they do spend money, they make poor decisions (see Meru acquisition). They want to be a security company, but their product portfolio would suggest they want to make everything under the sun at a cheaper price point. Essentially, they look more like a one stop shop for the mom and pop than they do a serious security player. As I stated earlier, they are cheap. You get what you pay for. This product belongs on the end-cap at bestbuy next to Netgear.