I have built products entirely through the management of remote contractors. Depending on what type of skillset you need the contractor for, there are a number of websites where you can find many many contractors for different types of work. Many of the websites have in-built trackers to track their time worked, and there are other 3rd party solutions you can use to allow you to track their work remotely as well. If you would like to schedule a call we can discuss the system and techniques required further. Best of luck.