ICO Presale Website & Wallet Integration

I'm in need of a skilled developer with specific expertise in blockchain and wallet integration. The project involves building an ICO presale website on the Polygon blockchain. All the necessary content and Figma designs are already prepared; your primary focus will be on integrating the presale contract and MetaMask wallet, as well as implementing a few key features in the contract.

here is the design of the website
https://www.figma.com/file/T5j4iGVQE6XyArglGlEmK2/SUPRHUMAN-WEBPAGE?type=design&node-id=0%3A1&mode=design&t=WTgoMoREJSwvGAnI-1

Key Requirements:
- Deploy a presale contract on the Polygon blockchain
- Implementing a locking mechanism in the contract
- Ensuring that tokens are sent only after the presale ends
- Make sure only virtual balances are visible; actual tokens are not sent

Ideal Skills:
- Extensive experience in blockchain development
- Proficient in working with the Polygon blockchain
- Prior experience with ICO presale contracts and wallet integration
- Familiarity with MetaMask and WalletConnect
- Attention to detail to ensure the proper implementation of the locking mechanism and token visibility settings.

i have white paper , all needed hyper links ready