eBay API expert wanted to finish off php/javascript program

Hi I have been working on the development of a php/javascript program for a client that uploads products from an XML file to ebay using the eBay Trading API. I ran the script in September and it worked successfully but it does not work when I run it now. I have searched the internet for a solution and tried several different things but I cannot get it to work. I cannot afford to spend any more time debugging the script and I am looking for someone who can get the script to work using all browsers. The script also needs to include a listing template (already coded). There may be some additional small amendments to make to the script. The person I am looking for will have the following qualifications/experience: (1) Very good English (2) Indepth knowledge of the ebay API including the Trading API. (3) Experience of HTML, CSS, PHP and Javascript (4) Knowledge and experience of using the XMLHTTPRequest method to send and receive data ebay data (5) Knowledge and experience of AJAX (6) Experience of uploading products to ebay stores (7) Experience of working with the eBay Sandbox. The script is urgently needed so you must have excellent skills. Please supply details of your experience in each of the above areas. A bonus will be paid for the applicant who delivers a solution in extra quick time. More work may follow for the right person.