This is great. It's critical to bucket engineers into levels with a checklist like this. Are they eager to explore every corner of the problem, from networking

This is great. It's critical to bucket engineers into levels with a checklist like this. Are they eager to explore every corner of the problem, from networking to the browser backend. But not in too great detail - not focusing on one topic too much. But you also don't want them talking too much - a great engineer asks questions as much as provides answers.