Hi
I am Joomla developer having 6+ years of experience.
I have developed commercial as well as custom Joomla extensions(components, modules, plugins).
I also have vast experience of customizing various third party Joomla extensions K2, Virtuemart, Jomsocial, JEvents, CB, RS Forms, Mosets tree etc
I have experience of integrating varios API like payment gateways, SMS gateways, Google APIs etc
I went through your requirement, its very clear.
This functionality can be integrated in JEvents.
I am very good in communication and available 24*7 through messaging services like skype and hangout.
If any query please feel free to let me know.
Thanks