Decross

Enzo

Senior Solidity developer specializing in secure smart contract development for DeFi, NFTs, and Web3 applications. - Built and deployed production-grade smart contracts using Solidity (v0.8.x) on Ethereum, Polygon, Arbitrum, and Optimism - Implemented ERC-20, ERC-721, ERC-1155, and custom token standards with upgradeable proxy patterns (OpenZeppelin) - Developed DeFi protocols including AMMs, lending pools, yield optimizers, and staking mechanisms - Optimized gas usage by 35–60% through efficient coding, assembly optimizations, and batch operations - Integrated Chainlink oracles, price feeds, VRF, and automation for secure external data and randomness - Conducted internal security reviews and collaborated with external auditors (e.g., PeckShield, Certik) - Built cross-chain bridges, token vesting contracts, and governance systems using multisig and DAO tooling - Worked with front-end teams integrating ethers.js, viem, wagmi, and Web3Modal Current ongoing freelance projects paid in cry

Experienced blockchain developer focused on Ethereum-compatible chains. - Wrote, tested, and deployed secure Solidity smart contracts for DeFi, NFT marketplaces, and token utilities - Specialized in ERC-20/721/1155 tokens, staking, farming, launchpads, and vesting schedules - Reduced gas costs significantly using immutable variables, storage packing, and efficient data structures - Integrated with popular libraries: OpenZeppelin, Uniswap v3 periphery, Aave, Chainlink - Developed dApp front-end connectors using Web3.js / ethers.js - Participated in multiple mainnet launches and post-deployment monitoring Actively taking new freelance blockchain & crypto projects in 2026.