Pros
I have joined ZoomInfo mid last year and so far so good. Have to say some of the reviews in here seems to be a bit harsh, since people from all departments have been friendly and ready to help right from the word go, especially the Sales Reps. Maybe some reviews in here have some true in it and if there is, they are outdated as I do not see it happening since I started anyway. I think it is a great company to work for and with great possibilities to grow or continuously grow personally and professionally. A great name to be associated with.
Cons
It is a rapid growing company and therefore a lot to do. For some companies this might be a bad thing. At ZoomInfo has the opposite affect. It knows exactly where it wants to be and gets the right motivated people to make it happen and achieve personal, team and company goals.