Pros
SpaceX in general is very challenging place to work in a good way. You will always be learning new things and pushing the limits of what you are capable of. This is probably the thing I have enjoyed the most about working here. Management is also always pushing to improve things. Coasting is never acceptable. Vandenberg specifically is a very close knit team that still has some of the small company/startup family feel that sometimes can be lost at the larger sites.
Cons
Pushing to meet unrealistic schedules sometimes causes people to make decisions/compromises that in the long run could have been avoided. This causes projects to become more expensive/time intensive than if the correct dates had been given from the beginning. With time this has gotten much better and is trending in the right direction but can still be a struggle from time to time.