Maybe not the best gig but a start -
http://forums.jetcareers.com/jobs-available/45888-traffic-watch-pilot-needed.html
I don't think the company exists anymore a search came up with nothing. Traffic watch I know 2 people that fly for the company that does it but they arent hiring anybody right now but they will let me know when they do!
This may not work for low time, but when I was looking into corporate aviation, I got on flightaware.com. I was able to look up tail numbers of some of the jets coming into the airport to see who they were registered to.
That is a good idea, but how would you go about determining who the plane was registered with? Is there a website?
If you're willing to go on the road for months at a time the Pictometry operators are a good gig. I do believe there's one based in AZ. Do a search and you'll find tons of info.