Kai Lee
Senior Full-Stack Web3 Engineer with 8+ years of experience building production-grade dApps, DeFi protocols, and NFT infrastructure across EVM chains. Skilled in Solidity, React.js, Next.js, TypeScript, Node.js, ethers.js, PostgreSQL, Docker, and AWS, delivering end-to-end solutions from smart contracts to frontend UX. Experienced in launching multi-chain projects with optimized performance, secure architecture, and measurable user adoption.
Experience
Senior Web3 Engineer
Rabbit
L.A, US
•Developed and deployed full-stack dApps using Solidity, React.js, Next.js, TypeScript, Node.js, PostgreSQL, Docker, and AWS. •Designed smart contract workflows for tokenized systems with Hardhat and ethers.js, reducing transaction failures by 25%. •Built responsive frontend with Wagmi, Viem, WalletConnect, improving wallet connection success rates for new users. •Created backend APIs and services with Node.js, Express.js, Redis, PostgreSQL supporting scalable, real-time blockchain interactions.
CTO / Lead Blockchain Engineer
Aasthi
NY, US
•Led smart contract architecture for a decentralized investment and betting platform using Solidity, Hardhat, React.js, Node.js, MongoDB. •Built internal dashboards and frontend components with React.js and TypeScript to enhance operational visibility. •Mentored junior developers and conducted smart contract audits, improving code quality and security.
Web3 Developer
Tectra Technologies
KL, MY
•Built NFT marketplaces and play-to-earn games using Solidity, React.js, Next.js, Node.js, MongoDB, Web3.js. •Integrated wallet connectivity via MetaMask, WalletConnect, ethers.js, improving transaction reliability. •Optimized frontend and blockchain interactions for high-traffic NFT launches, reducing load times by 30%.
Education
KDU University College
Bachelor of Computer Science
Skills
PROJECTS
TomeBlock, Decentralized DMS Platform
•Built decentralized document management infrastructure using React.js, Next.js, Solidity, Node.js, PostgreSQL, and AWS. •Developed blockchain-based verification workflows and secure Web3 authentication systems.
CrestFi, Decentralized Infrastructure Network
•Developed decentralized infrastructure systems with Solidity, TypeScript, Node.js, React.js, MongoDB, and Docker. •Built SDKs and developer tooling for ecosystem integrations and multi-chain expansion.
YouBuidl, Multi-chain Prediction Protocol
•Led backend and protocol development using Solidity, Node.js, MongoDB, Redis, and Docker. •Designed secure treasury and transaction management systems for decentralized betting infrastructure.
Ultibets, Multi-chain Prediction Protocol
•Led backend and protocol development using Solidity, Node.js, MongoDB, Redis, and Docker. •Designed secure treasury and transaction management systems for decentralized betting infrastructure.
HoodyGang, Upgradeable NFT Platform
•Built upgradeable NFT infrastructure using Solidity, React.js, Next.js, and ethers.js. •Developed NFT lifecycle management flows and simplified Web3 onboarding UX.
LANGUAGES
English
Full Professional Proficiency
Malay
Native or Bilingual Proficiency