Pros
Interesting technical challenges, opportunities to work in different teams and locations, great benefits, smart people. It can be thrilling to work on technology used by many so many businesses, especially large companies. The work environment is very supportive and inclusive.
Cons
The development/QA environment for the customer portal can be frustrating to work b/c of issues in shared databases and systems. Plans to streamline and modernize the web app development / dev ops environment are laudable, yet slow-going. There is a lot of tech debt including applications with poor documentation and without unit tests. Career advancement for software engineers is hard to predict or understand. There are also not enough senior front-end developers, so the user interfaces are often created by folks without enough expertise to do it well. Also, technical interviews are not well organized, in my opinion.