Union is a nice dense suburb with a lot of great food and wonderful quality of life. It's on a direct train line to Raritan but I don't know if J&J is close enough to take a train there and walk. It would probably be just at the top of the 30 minute drive.

Millburn, Summit, or Springfield would get you closer and feel a bit more like a gentrified upper crust suburb, but definitely also a bit nicer than Union.

Union is also really easy to get to NYC from, if you want to hop a train or bus in.