Solana NFT expert

========I don't need designer.=======
======== I need rust expert .=======
I'm looking for Rust expert who has good experience in Smart Contract using Rust on Solana Blockchain Network.
I need very big smart contract.
So if you are interested in this big project, please send simple smart contract for mint, buy, sell using Rust on Solana blockchain network.
If you can't send this very simple contract, don't send message.

Only you created, don't send other's contract.

Thanks