Pros
The department I worked in used lots of cutting edge technologies. Great benefits. Lots of opportunities to go to trade shows and conferences. Engineers can build whatever they want.
Cons
Please understand, Neustar is not a technology company; it is run by the finance department. The marketing department is extremely lackluster and has no idea how SEO works. Human Resources was completely disconnected from reality so we often outsourced staffing to 3rd party staffing agencies. The engineering team would build features and products before doing any market research and without a revenue model. For months, the CTO was telling us our office would be merged into another much larger office in San Diego but then, out of the blue, he decided to "relocate" us to Mountain View instead. Verbally, Neustar told us we could all keep our positions if we moved to Mountain View but the truth was most of us received simple termination notices with no mention of an option to move. Several engineers were hired only a few days before the announcement and one guy even closed on his mortgage the day of the announcement. Two months later, the CEO decided to "relocate" the Mountain View office to downtown San Francisco. And after years of encouraging employees to work from home, upper management decided to forbid remote work shortly after Yahoo declared it would do so. Employees were sometimes hired and "let go" with little to no notice (i.e. 2 days notice). Many engineering positions were outsourced to India. Engineering meetings often consisted of one engineer and 6 managers (not an exaggeration). The quintessential "Office Space"-like work environment.