I agree with a lot of your comments (esp. the one about working on hard problems). We're constantly shifting our messaging to make sense and resonate with engineers looking for exciting yet challenging work. Culture is big to the engineers at Knotch, so we often lead with notes about our best place to work awards.

But "best" is a subjective term. In a job post referring to "best engineers," I think it's a cop-out and just fluff.