Token Presale Dashboard Developer (dApp)

We are seeking a skilled and experienced developer to design and build a Token Presale Dashboard for our upcoming token project presale. The ideal candidate will have a strong background in blockchain technology, user interface design, and secure payment integration. This dashboard will be the central platform for users to participate in the presale, monitor their token purchases, and manage their transactions.
Key Responsibilities:
• Develop and deploy a secure and user-friendly Token Presale Dashboard.
• Integrate cryptocurrency wallet connectivity (e.g., MetaMask, Trust Wallet).
• Enable real-time token price calculations and daily price adjustments.
• Implement secure payment options for multiple cryptocurrencies and fiat currencies.
• Provide user authentication and data encryption for enhanced security.
• Create a clear, intuitive user interface for managing token purchases.
• Monitor the dashboard’s performance and troubleshoot issues as needed.

Requirements:
• Proven experience in blockchain development and cryptocurrency integrations.
• Proficiency in programming languages such as JavaScript, Python, or Solidity.
• Experience with smart contract development and deployment (e.g., Ethereum, BSC).
• Strong knowledge of web development (React, Vue.js, or similar frameworks).
• Understanding of secure payment gateway integrations.
• Familiarity with tokenomics

Please answer my question with number wise. Otherwise I will reject your proposal......

1) Have you recently developed a presale dashboard? Show examples?
2) How long does it take you to develop a presale dapp?
3) What payment gateways do you have experience with?
4) How do you keep a presale dashabord secure from hacks and other security risks?
5) What frameworks have you worked with?