Need a unity developer for AR application

I Need an Unity Application developer to deveop a AR application Using Unity and Should have developed AR APPS in unity before. That should all support all the Devices . Please only Experiance developers or those who have developed similar Application contact or Place Bid No New Freelancer Required .
Note: Before Finalization of Project Freelancer has to show a demo of the application and then only then the Project will be awarded
No Extra Amount will Be paid apart from bid .