Pros
Given its relatively large size, moving into other groups or organizations to keep the work fresh is very common. Top performers can have their choice of locations to work with preferential cross-posting opportunities. Benefits are great with 100% match 401k + relatively cheap healthcare costs, and compensation is top tier for top performers! If you're ambitious and bring some dedication to add value, you can spend an entire career here!!
Kontras
...can be bureacratic given its undeniably larger corporate nature, but less so than similarly large organizations. It is a public company with dedication to its shareholders, so occassional cost cutting is also part of the culture. Top performers are well protected, though, and displaced employees usually find somewhere else in the company to go.