CRE Loaded - API Integration for Product Feed

I have a new site that is beginning to be developed, the site will be ready in about 3-4 weeks. A) Please see the attached API Guide for one of my suppliers. I need to find a developer able to do this integration. B) I need to have the ability to mark up or mark down prices both globally and individually. Once we begin, the work needs to be finished within about 2 weeks, thank you! Budget is $500-1000