FOSSBilling Developer Needed to make a Module

Im looking for a good PHP DevOps who can develop a Module for a billing Ssytem called FOSSBilling, this module will need to have full User controls and User management into an a fully opensource Backend Email Server System, if you know your game in making Module and read Docs please read this guide then come back here to tell me if you are willing to do it or not https://docs.fossbilling.org/extensions-and-development/extensions/ I will be happy to share with you a document of Scope and Requirements.