Solidity Developer

Developed RESTful APIs using Node.js and Express.js to handle product, user, and order management features. Implemented JWT-based authentication and role-based authorization (Admin/User). Designed and managed MongoDB database using Mongoose ODM. Integrated VNPay payment gateway for online payment processing. Integrated an AI Agent using Gemini API to assist users during product search and system interaction. Developed user interface and admin dashboard using React.js with Vite. Connected and handled backend data through Axios. Built responsive UI using TailwindCSS.

A blockchain-based platform designed to store and trace the history of game accounts transparently, preventing fraud and ensuring data integrity. Developed Smart Contracts using Solidity to manage game account information and history. Deployed and tested smart contracts using Hardhat on Pione Zero Chain (EVM compatible). Built a React Native mobile application and integrated WalletConnect and Ethers.js for blockchain wallet connectivity. Stored decentralized metadata on IPFS. Developed Node.js APIs for blockchain data verification and retrieval.