Full-Stack Web3 Developer Needed | Staking & Presale Platform + Smart Contract Development

We are looking for an experienced Full-Stack Web3 Developer to build a Staking & Presale Platform, including smart contract development, Web3 integration, and a user-friendly front-end. The platform will allow users to participate in a presale event, stake their tokens for rewards, and track their earnings in real-time.

Key Requirements:
✅ Smart Contract Development (Solidity, ERC-20, ERC-721, ERC-1155)
✅ Staking Mechanism (Fixed/variable APR, lock period, reward distribution)
✅ Presale Contract (Whitelist, vesting, fundraising mechanics, soft/hard cap)
✅ Web3 Integration (Web3.js, Ethers.js, Metamask, WalletConnect)
✅ Front-End Development (React, Next.js, Tailwind CSS, TypeScript)
✅ Back-End & Database (Node.js, Express, Firebase, or MongoDB)
✅ Security Best Practices (Reentrancy prevention, gas optimization, flash loan protection)

Smart Contract Features:
Presale Contract:
? Supports token fundraising before launch
? Whitelist feature for private sale access
? Automatic token distribution & refund system

Staking Contract:
? Supports flexible and locked staking options
? Auto-compounding rewards & real-time earnings tracking
? Early withdrawal penalties & reward multipliers

Responsibilities:
✔️ Develop and deploy secure smart contracts on Ethereum/BSC/Polygon
✔️ Build a staking & presale dashboard with real-time tracking
✔️ Implement wallet connection (Metamask, Trust Wallet, Coinbase Wallet)
✔️ Ensure gas-efficient & optimized contract logic
✔️ Provide detailed documentation for contract deployment

? If you have experience in developing DeFi platforms, staking mechanisms, and presale systems, we’d love to work with you!