Joomla Payment Gateway Plugin Fix

Need expert Joomla + Community Builder (CBSubs) developer to debug and fix a custom Elavon Converge Hosted Payment Page gateway plugin. Must have deep understanding of Joomla and payment gateway integration. Responsibilities include identifying and resolving issues, ensuring secure transactions, and optimizing plugin performance. A clean test/dev environment is already set up on a dedicated server with full cPanel + SSH access available for the selected freelancer.