
The sense of accomplishment from doing something that makes a difference every day.
They plan a task, let us know how it relates to the overall project / goal, and then get out of the way to let us accomplish the task.
They are always open to discuss issues and alternate paths forward. I have yet to come across something that needed to be done that could not eventually be accomplished.
The money is fair, the amount of vacation time + holidays is almost more than I can use in a year, and having PTO with managers and HR that actively encourage you to use it when appropriate.