WANTED: BTCPAYSERVER expert with programming and webdesign skills

I need an expert who can build a user interface and a backend interface for our btcpayserver. Our users are website owners who want integrate bitcoin payments on their websites. For each transaction made at our btcpayserver they pay a percentage of the transaction amount to us. User frontend must have a accounting system for paying the transaction costs with bitcooins or with ideal on their account and on the backend we must be able to manage account settings, transaction costs, total transactions en other things. I'm looking for a developer who have also knowledge of installing/maintaining btcpayserver, Linux OS knowledge, database server knowledge and experience with docker containers. Also experience with the database structure using by Btcpayserver (currently running on a oracle db) is needed for making a plugin for wordpress/joomla/magento and later some other cms systems. For btcpayserver is already an open source plugin available on github, this plugins must be customized for our btcpayserver so user can easily install I’t. For example you can check [login to view URL] for what we want. A already maked script/system is also possible. Please contact me for more details