Smartsheet

It is a really smart bunch of folks with no bad apples.

Management knows what they're doing, they treat people right, and they have integrity.

There is a surprisingly good work life balance for a startup.

The company is doing well and has loads of untapped potential.

There is good pay including equity.

The company is very healthy, has a solid product, and good management, which equals high employee morale.

Older, more experienced staff -> a more "professional" environment, i.e. not as "fun" an environment as your stereotypical software startup--no foosball table, beer fridge, etc.; but if you like to come in, get your work done, and go home at a reasonable hour, maybe that's not a negative

Being a B2B product, it's not the sexiest thing in the world to tell people you work on

Keep up the good work!