Build a Magento payment module

We are looking for a developer with experience on Magento payment modules. We need a payment module for GTB WEB PAY. We need to be able to process payments with problems at [login to view URL] will be tested fully by the bank and until they give approval before job is done. This module will made into an extension for easy installation into any version of magento. All documentations are available at your request. * Prior experience with Magento modules is a must.