Pros
ZoomInfo is a great company for software development. ZoomInfo offers challenging work using up to date and interesting technologies. It is a great place to develop new skills and gain experience in some of the "hot" industry technologies. There are a lot of great employees here that are more than willing to share their own knowledge, encourage employee growth, and have fun in the process. ZoomInfo is attempting to tackle some very difficult problems that will push you as a software developer. Additionally, the work/life balance is fantastic and management is very easy to work. A number of the managers at Zoom were previously developers at Zoom, so they have a great understanding of the challenges presented in the work here.
Cons
The challenges presented by the problem space that ZoomInfo is attempting to solve are substantial. This means that as a software developer here, you will be expected to push yourself, work hard, and solve problems. There are plenty of resources here to guide you, but it is an expectation that employees will work hard at problem solving and develop skills over time to tackle issues presented by challenging projects. Also, as a small agile company, Zoom tries to react to changes in the marketplace. As a result, software developers may find themselves facing shifting priorities. This has been improved recently as Zoom appears to be better understanding and focusing on specific, concrete goals.