We use a Magento plugin called M2E. It allows us to list items from our store onto Ebay and to keep the quantities, orders etc synchronised.
It is working fine, except for the keeping ebay quantities and store quantities synchronised.
We need someone who is experienced and familiar with the the M2E plugin to make alterations and fix the issue. Will require a familiarity with VPS servers in order to fix?
Ongoing work available to the right person. Ability to communicate fluently in English is essential owing to the possible complexity of explaining the details of the project.