Often unclear how promotion and reward decisions are made.
As in most large companies, microcultures abound - some teams have better cultures than others.
CEO and people directly below are great leaders, but next level down not so much.
Strange demographics - 2 large groups: ex-PSFT (40s-50s in age, spent whole life in Ent SW), and recent college grads. If you don't fall into one of these categories, it may feel lonely.
Cult-like culture around Dave Duffield and Workday. Not necessarily bad, but a little creepy.