Pros
The ability to have such a direct impact on the outgoing software, and the ability to work on projects that can help grow the company are huge benefits. As a growing company, we are small enough that everyone knows everyone else, and there is a real sense of community. Nobody is scared to bring up new ideas in meetings, or take on projects that they may initially know little or nothing about. Everyone is always available to help everyone else, and there isn't a sense that some employees are better or more important than others. We all have our roles to play, and it isn't uncommon for a developer to ask a support person for assistance, or vice versa. There is a tremendous opportunity to learn in this environment and to grow your career into what works best for the company, and for you as an individual. Employee feedback is taken very seriously, and as a result of some recent feedback, one of the offices now offers a free gym membership to all active employees. Birthday parties are always a thing to be celebrated, and half the time on holiday's you wouldn't even know you're going to "work" with things like pot luck lunches, secret Santa, or board games. There is a huge mix of talents and backgrounds in the company, and that in addition to everything mentioned above makes this a great place to work, and a great group of people to work with.
Cons
As a small company, some of the extra benefits such as healthcare are a bit expensive, but that is almost unavoidable at this point anyway, and the company does the best that they can to try to offset some of those costs to the employees.