During my time interviewing for my FT first role as a non-founder, I've been asking the engineering leaders this question. A few responses so far:

* Proactively take on projects, don’t wait for someone to give a perfectly scoped out task.

* When things go down, the engineer doesn’t shut down, they tackle the challenge logically, and will also reach out for help appropriately.

* Hunger to learn

* Go above expectations to fixes systems or builds things that makes it easier for engineers or other teams to operate.