Pros
I was looking for something new and exciting and I finally setteled with AppDynamics. They have filled those requirements and so much more. I was fairly new to the whole concept of APM before I was thrown into it and the excitement hasn't let up since day one. Even with a good run professionally with good teams, good projects, good pay, good people etc. AppDynamics has taken it all to another level. The company is loaded with smart, hard-working people and every piece of the company is dynamic and energetic. The cutlure is really fun and even in my not so long tenure have started to make not just good office relationships but even good friends there. (The external events such as paintball, dinners, happy hour, the zoo, etc don't hurt either.) There is always something to learn, something to investigate, something to do. Its a great ride and I only see it staying that way. Bottom line, this was a good career decision to come to AppDynamics and I am very happy to be there. I am learning a lot and also getting to be involved in many things in addition to my own job which keeps things interesting.
Cons
In full honestly, it was a bit overwhelming to start, but with the combination of being a new domain for myself and a slight change from my previous professional life this was probably due to my own lack of knowledge in the domain along with the growing pains of a start-up. Sometimes the battles are long and even with that feeling of driving a problem to a successful conclusion, it can wear on you. This though would apply anywhere and isn't specific to AppDynamics.