The biggest problem with the company is the management. There is a review on this page called "Stay far, far away". Read it. This person describes every issue with ZoomInfo in more eloquent detail than I can provide.
Notice that it is one of the only reviews without a management response and is marked as helpful more than any other post. This is because everything in the review is verifiably true, and all current and former employees know it.
Only choose to work here if you are desperate.