Unreal Engine Developer

Hello, I'm looking for a Unreal Engine Developer, Who can integrate polygon blockchain in my existing game, i have a prototype game. I just want to see how its work as a prototype, So the main thing i want, In-game i can login with my crypto - polygon or with address or with Metamask. Then can trade NFT. Please massage me on how you are going to do that? Again I'm telling you, i just want a prototype, Thanks