Pros
Really great people, not just my team but other teams very helpful. You get the sense we are all pulling together and vast majority of people I have met from Bob Hammer down to support team are genuinely enthusiastic and enjoy helping everyone win. I'm on the sales side so lots of pressure and work sometimes very intensive, but otherwise manageable. Compensation is good and competitive. The new headquarters are frickin awesome!
Cons
There are sometimes product lags despite an awesome development team, so what customers want sometimes involves future product releases, but that's typical for software. There are some systems that don't work so well internally, but Commvault is at least small enough that it doesn't necessarily interfere with getting the job done. Don't know about career opps, there is a long ramp up time, just trying to ensure I contribute. Compensation models for sales seem to change or always be in development.