Pros
The company has a very long, successful history, producing products at the top of it's industry. Their engineers are very talented and well compensated, They have some cool perks on campus, such as a running track, basketball courts, and an ice rink. Their location is excellent if you live in the Lakes area.
Cons
Their applications are mired in ancient technology. They want to upgrade them to current technology, but most aren't stable enough to do this. Also, there is virtually no IT governance. Basically, people all over the company in non-IT roles can create applications in whatever technology they want and the IT department is expected to support them. Advice from the application developers is often not considered when making decisions about company-wide commercial application licensing and support.