I know a couple of people who have worked for Adobe. I can't offer anything super insightful but they both liked it there. It isn't "glamorous" like Facebook, Google, etc. It sounded just like most other big IT companies. They were both working on the transition from a boxed product to their cloud platform so not the core products (Photoshop, etc.) but more the back-end platforms.
Do you know what you will be working on?