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Freelancer Overview

Sheriff Babatunde babatundesheriff971@gmail.com github.com/sheriffphx Smart Contract Developer & Security Auditor Blockchain engineer with 2+ years of hands-on experience designing, deploying, and auditing smart contracts on EVMcompatible chains. Proficient in DeFi protocol architecture, NFT/token standards, and security vulnerability identification. Passionate about writing gas-efficient, exploit-resistant code and keeping decentralized ecosystems safe. T E C H N I C A L S K I L L S E X P E R I E N C E Smart Contract Developer & Auditor 2022 – Present Freelance / Independent | Remote Developed and deployed production smart contracts including ERC-20/721/1155 tokens, staking systems, and DAO governance modules on Ethereum and Polygon. Conducted manual and automated security audits for DeFi protocols, identifying critical vulnerabilities including reentrancy flaws, integer overflows, and access control misconfigurations. Participated in Code4rena and Sherlock audit contests; surfaced medium and low-severity findings across multiple protocol. Blockchain Developer Web3 Project (Contract) | Remote Architected a multi-token DeFi yield aggregator using ERC-4626 vault standard with automated strategy rebalancing. Wrote comprehensive Foundry test suites achieving 98% line coverage and fuzz-tested edge cases across 10,000+ runs. Collaborated with front-end team to design contract ABIs and events for seamless dApp integration. A U D I T & S E C U R I T Y H I

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