Data Feed - Magento Catalogue Export xlsx

We have a Feed Generator installed on our Magento store. We need to create a feed for 2 marketplaces. Need to hire a MAGENTO expert, who is familiar with this extension to get it set up and working properly. The feeds are currently generated by a third-party intermediary but the configuration is not correct (product data is missing /and or does not display correctly on the market places. We can give you the information that we need to export from our magento store. We can show you the feed that is currently being generated. Need quick turnaround please as we now approach our peak selling period. Payment conditions - please note carefully - 1. we offer to make milestone for full amount 2. milestone will only be released when feed has been uploaded, accepted and checked as correctly displayed by market places(s). If errors in feed design are reported by market place these need to be fixed before payment is released. if products are not listed because of problem with images or data etc we need to know about these so that they can be quickly corrected and the feed uploaded before payment is released. This is trial project for 2 marketplaces - we have another 16 to follow if this is succesful. Thanks!