Pros
Cool products that you can be proud of. There are only two commercial aircraft makers in the world and one of them is in Seattle the other France. People can work at any company and build software but in the US you can only build large commercial airplanes at Boeing. Pretty good benefits, low or no-cost health care, good education benefits, good worklife balance. Ability to work on unique projects and expand experience.
Cons
Pay is not great. Extremely large percentage of workforce is older which causes a glass ceiling for upward mobility. Many layers of bureaucracy, takes forever to do anything, not nimble. White Collar Engineers are required to be in the Union. You can get stuck in one career field if you are not careful, some management is very narrow minded in their approach to careers.