Pros
You will be exposed to alot of different emerging technologies and the latest techniques. Plus there are a lot of geniuses that work here to you can collaborate with a team of experienced developer with a wealth of knowlegde.
Cons
The stress levels are very high at times. You will have multiple campaigns all running multiple ads. You will have campaigns your working on yourself and you will also be providing support for x amount of clients all at the same time. Its not as bad nowadays since we have more developers. But the tensions can go high at times