Tadashi

Sato

- Led the architecture, development, and review of 5 production-grade Solidity smart contracts powering core on-chain features for Ninjalerts, a real-time crypto and NFT analytics dashboard. - Oversaw end-to-end smart contract lifecycle, including design, development, internal auditing, Foundry testing, and deployment to testnet and Mainnet environments. - Coordinated and guided frontend developers in integrating smart contracts with React-based dApps using Ethers.js and Web3.js, improving transaction reliability and UX performance by ~15%. - Implemented gas optimization strategies and conducted systematic unit and fuzz testing, identifying and resolving 10+ vulnerabilities and logic issues prior to release. - Collaborated with product managers and cross-functional teams to translate business logic into secure, scalable contract architectures for NFT and DeFi-related features.