536502 Simple Script For a Server

I am looking for a simple programming job from a programmer who know what they are doing. I need a script that will Synchronize my Server so that every 12 hours all images from my word press web site are imported to my Amazon S3 account. This is due to the fact that my site has a members area where people post images just like facebook to their profiles. The site would run slow if we did not have this functionality. The images of course must still remain on the site. The person who I award this job to must explain in details how they will do this. I will be providing my information to my Amazon S3 account.