pennchen

Web3 / AI Frontend Engineer with 5+ years of frontend delivery experience. I combine AI application development, DApp integration, and production frontend engineering across React, Next.js, TypeScript, Web/H5, mini programs, and data-intensive admin systems.

I am the Owner and full-stack developer of AgentPay, a Cobo Track runner-up at the AI × Web3 School Agentic Hackathon. Built with Cobo Agentic Wallet, AgentPay demonstrates controlled on-chain execution for AI agents through Pact-based authorization, pact-scoped keys, idempotent request handling, and optional testnet proof records.

My stack includes Next.js, Supabase, streaming AI APIs, tool calling, EVM integrations, ethers.js, viem, wagmi, Solidity, and Hardhat. I also have production experience with Tencent Cloud TRTC and MQTT for real-time IoT video calling, and Shenzhen Metro online-ticketing administration work at GRG Banking Equipment. I can own a feature end to end, from requirement breakdown and frontend architecture through API integration and release.

Portfolio: https://penn.rocchan.online/
AgentPay live demo: https://agenticpay.rocchan.online/
Award announcement: https://mp.weixin.qq.com/s/OYaTDC1InraNjlaHvv2z5Q
Note: My portfolio and some live demos are hosted on overseas infrastructure. If they are unavailable on your network, please contact me to arrange a walkthrough.