App developers

We are looking to build an application for medical Events/conference ;

features for the admin over the platform:
* Create an event and payment 
* Broadcasting of the event 
* Upload details 
* Send invites
* Create a response quote   
* the admin have the ability to process the payment in which they will have the ability to make a particular event free or paid along with the refund functionality 
* Zoom-Like events over the platform
* on-site and virtual both 
* For each event, there is a target audience to whom link will be sent and there will be other events for staff and others for the public in which users can make payment and attend the event (physical or Virtual) 
* mobile application and web based platform
* ability to create QR for sending to the users
* Check in
* Check out
* Attendee certificate