A person capable of making things work in
unfathomable and near-magical ways. Generally possesses extreme levels of mechanical
aptitude plus a formal education including large doses of applied math, physics and chemistry which he actually understands. Can perform calculations without using a calculator. Often builds his own mechanical devices from loose parts for self-amusement. A modern day witch. Often has difficulty relating to people because ideas on new and better ways of doing things are constantly
flooding into his/her mind. In many cases just bringing an engineer into a room containing broken equipment causes the equipment to start working again.
One day an engineer found himself at the pearly gates.
St. Peter looked him up in the book, and found that he was destined for
the other place. The engineer protested that this must be a mistake, and that he had lived a righteous life, going to church every week, being faithful to his wife etc. to no avail. About 6 weeks later God reviews the lists and realizes that the engineer has been sent to the wrong place. So he rings up Lucifer and demands that the engineer be sent up. Lucifer says NO WAY. This guy was the best thing to ever happen here. He's got the AC working, we have running water and cable now too, and next week he thinks we will get internet access and an ice cream machine. God is pissed and yelling says "I'll sue". Lucifer says
LOL where are you going to get a lawyer and hangs up.