Pros
Working at nPlan has been a great experience for me. We are several small teams working on big problems, which keeps things challenging and interesting all the time. I think that the biggest benefit of working at nPlan is that everyone's ideas get heard and evaluated on their merit. If you can think of a solution to a problem, you are encouraged to implement it. On top of that, you have good work/life balance, great people, great benefits and the possibility to work on a problem that will change the world for the better.
Cons
The cons of working at nPlan come, mainly, from being an early stage startup. For instance, many processes are not yet properly defined, a lot of time is spent making decisions, attending meetings that are not necessarily relevant to you or not ever having enough people to get everything done on time. However, all these cons are balanced out by the culture of the company, which encourages everyone, at every level, to continuously improve themselves and the company.