Website to Manage EBAY + Amazon - repost

I need a website that can manage sales from EBAY and Amazon. The website should be multiuser. It should be able to manage inventory from EBAY aswell as AMAZON. Furthermore i will be wanting to integrate paypal into it. Further layout and design we can discuss. Regards Job Description: We're looking for a Web Developer. Your responsibilities: - Review business requirements - Perform a technical analysis of requirements - Produce a solid, detailed technical design - Write clean, modular, robust code to implement the desired requirements - Contribute ideas for making the application better and easier to use Your qualifications: - Programming languages: PHP, HTML/XHTML, CSS, JavaScript - A work style that is extremely detail oriented - A complete Elance profile - References or an established reputation on Elance preferred