The technology you are working on is fun but the company suffers from lack of vision and poor management. Every year there is another pivot with a lot of hoopla in order to keep the VC's happy. Couple that with a largely ineffective and inattentive upper management more concerned with self preservation, you have an environment that is unsustainable. Your best hope of advancement is to ingratiate yourself to an executive.
Free lunch, Cheap snacks, Good people
Benefits are just ok, Management needs a lot of work