Amember customization

We are seeking a programmer that has experience with Amember Pro (v 3.8) and credit card payment gateways. (Must be expert in PHP/MySQL, web security, etc.) We need to create a customize solution that uses a separate secure domain to process payments, but keep all user data up to date on the primary membership site. We hope to also employ the successful applicant for various minor PHP/javascript adjustments to the primary membership site as well. A solid, well-rounded grasp of Moodle, VBulletin, Wordpress, PHP/MySQL and javascript/AJAX would be a plus. Thanks!