Pros
The mission statement and goals are exciting. It is actually kind of cool to be a part of something that could potentially become really big and important in the future. Plus, if you know how to manage workload, this company is good for work-life balance. I've never had a probelm taking time off when needed which is nice. Plus all in all the company consists of generally nice people.
Cons
Too many people are promoted for the wrong reasons. Many people at this company seem to be promoted just because they've been around a long time. Unfortunately this puts incompetent people in senior roles. If someone has been doing the same job for 5+ years and they are still just an average performer, it's time to manage them out, not up. Also, many people are recongized for doing a great job by being promoted to a role that sets them up for failure. Just because someone is a brilliant scientist, doesn't make them a stellar people manager. The skillsets are completely different, and the career paths should be treated as such. When people are promoted for the wrong reasons nobody wins. The person who is promoted becomes overwhelmed and the people forced to report to these people become resentful.