From Brandon Rhorer's LinkedIn post

Hey engineering managers,

(I don’t speak for all of your team, but I probably speak for a couple of them.) Nothing pushes us to do our best work like a good sticky problem to solve. Motivational sayings don’t do much. Targets and reporting is a necessary evil. Micromanaging is a huge annoyance. Bonuses are nice, but not really a reason to jump out of bed in the morning. And browbeating is the fastest way to chase us off. But give us a problem to solve and the space to solve it, and you won't be able to pry it out of our hands at the end of the workday.

Sincerely,
Your problem solvers