Instead of posting this in a programming forum, I think you would find that "online freelancing sites" better suited to your needs.
I can't name an exact site (it would be a "plug", which might be against forum rules), but just googling related words gives plenty of results.
On such sites, you will even get benefits depending on the site, such a a per-hour monitoring system (with screenshots of your contractors pc as he is working), some have an escrow service (i.e. they hold your money, which is paid out only on delivery of satisfactory results), some have mediation/arbitration services, etc.
I personally frequently work on such sites on my free time, to keep my skills sharp.