Pros
The percentage of smart and skilled people is very high. There are many excellent engineers who can solve technical problems of any level. You can develop an excellent networking because people gathered in the company with a wide range of work experience and skills. Free food.
Cons
CEO is engaged in micromanagement, but due to his constant overburden with work, he does not go into details. It is difficult to prove the CEO at anything, he just doesn't listen. If we multiply his aggressiveness by people's fearing to object to him, we will get a corporate culture where everyone does only what the CEO says. As I said, very low culture, company is a revolving door, they hire many people and many of them disappear as fast as they get into the company. No adequate HR and support. No feedback at your work. You never knew what you did right or wrong.