Might want to stick "Ask HN: " in front of the title. I thought this was an article at first, hesitated to click.

http://paulgraham.com/start.html

What it means specifically depends on the job: a salesperson who just won't take no for an answer; a hacker who will stay up till 4:00 AM rather than go to bed leaving code with a bug in it; a PR person who will cold-call New York Times reporters on their cell phones; a graphic designer who feels physical pain when something is two millimeters out of place.