Man has established bases on the Moon. A lot of work is done with remotely operated vehicles (R.O.V.s) exploring, mining, hauling, and transportation. (Like buses or taxis. I'm not sure about this one.)
EDIT: These ROVs are being controlled by operators on the Earth. Not someone living on the Moon.
A high school student was able to get in on the ground floor of operating these types of vehicles, I think because the MC started by operating a pizza delivery ROV (which might have started as a gag but turned out to be popular to the residents.) The MC got a reputation as a great driver and got called to do other ROV jobs because the MC was always willing, and did fast an efficient job.
It's possible the MC also drove under different accounts to bypass working hour restrictions, but it might be he was part of a team of young people who pooled their jobs, and he ended up doing a majority of them. I think no one realized how many operating hours the MC had, and no one else even came close to the number of ROV hours accumulated.
I think at the time of story the MC (a college student now?) had spent many thousands of hours running ROVs and had built up a large database of good paths and bad paths to take so the MC was always very efficient in his driving. He may even have a large area of the Moon around the base(s) mapped image-wise in the database from the ROV cameras.
An accident occurs and a craft is down on the Moon's surface. He recognizes an image from the distress call, and logs on an ROV to go to the rescue with extra oxygen.
The story is very light hearted and amusing. (Especially the beginning, before the accident.) It's possible the MC is female, but I don't remember. I believe no one backs up the MC's location theory, because they only think WTF does the pizza delivery driver know.
It is possible this was an online story, and not from a book.