rizwanhameed

Spearheaded the development of cross-chain NFT marketplaces with advanced features like lazy minting, royalty management, and IPFS-based metadata storage across Ethereum, BSC, and Polygon networks. Engineered enterprise-grade smart contract systems for token launches (ERC-20, ERC-721, ERC-1155), token vesting, and crowdsale contracts with integrated access control, KYC/AML layers, and gas-efficiency optimization. Led internal audits and security reviews of mission-critical smart contracts, identifying vulnerabilities (reentrancy, overflow, front-running) and implementing best practices aligned with CertiK and Trail of Bits standards. Guided junior developers and conducted technical code reviews, setting up internal development standards and reusable smart contract libraries to accelerate project delivery and maintain code consistency. Collaborated with international clients and project managers to gather blockchain-specific requirements, scope decentralized solutions, and ensure timely delivery of MVPs and production-ready deployments across various L1 and L2 chains.

Led the architecture and development of Ethereum-based smart contracts for custom DApps, focusing on gas optimization, upgradeability, and audit-ready code using Solidity and OpenZeppelin libraries. Built full-stack decentralized applications (DApps) integrating Web3.js/Ethers.js with React front-ends and Node.js backends, enabling seamless wallet interactions (MetaMask, WalletConnect) and real-time blockchain data sync. Designed and implemented tokenomics models and smart contract flows for DeFi applications, including staking, yield farming, and vesting schedules, ensuring both scalability and security. Collaborated with UI/UX, product, and QA teams in Agile sprints, translating user stories into robust blockchain features, while maintaining clear documentation and versioning using Git and Hardhat. Contributed to multi-chain development initiatives, including deployment and testing on testnets/mainnets like Polygon and BSC, while creating reusable smart contract modules and integration scripts for cross-chain operability.