Frontend engineer with 5 years of experience, focused on dApp and AI full-stack products with practical wallet, on-chain, and AI workflows.
I'm Penn (Chen Peng), a frontend engineer with 5 years of experience, focused on dApps and AI full-stack products that can actually ship.
On the frontend side, I work with React / Next.js, Vue 3, TypeScript, Vite, Tailwind, Uniapp, and WeChat mini programs. I have built ticketing systems, metaverse interactions, and IoT audio/video communication flows.
On the Web3 side, I use Solidity, Hardhat, ethers, viem, wagmi, and RainbowKit to build wallet flows, contract interactions, multi-chain state management, and DeFi staking products.
My latest representative project is AgentPay, an AI payment agent system based on Cobo Agentic Wallet, which won runner-up in the Cobo track at a hackathon. I care about products that can run, demo, explain themselves, and keep evolving.
React & Next.js
Frontend engineering / modern UX
High-performance SSR apps, React Hooks state design, and meticulous Tailwind layout craft.
Solidity & Web3
Smart contracts / decentralized protocols
Deep EVM internals, ERC-20/721/1155 token systems, and Hardhat-based test & deploy automation.
Quant trading data
Market analysis / algorithmic thinking
Researching slippage in high-frequency moves, MACD/RSI fits, and US options-based hedging strategies.
Wise & cross-border assets
Global finance / borderless payments
Hands-on with offshore banking (UK / EU / HK), Wise inflow & outflow rails, and fast low-loss FX.
Shipped work that explains engineering ability directly: DApps, wallet auth, on-chain interactions, data UI, and full-stack practice.
AgentPay
An AI payment agent built with Cobo Agentic Wallet, demonstrating policy-bounded on-chain payment and verifiable transaction records.
NeWare
A multilingual product and documentation site for battery-testing workflows, including product discovery and administration flows.
Web3 Interview Memo
A structured personal learning library for Web3 and frontend interview practice, with question banks and project-based notes.
Build logs, architecture decisions, and technical retrospectives across Web3, frontend engineering, contract security, data products, and AI tooling.
Live sources from the last 48 hours across headlines, markets, Web3, and tech culture. No stale fallback stories — if sources fail, the page says so.
Want to talk about dApps, AI full-stack products, Web3 builds, or a DeFi contract review? Drop a line. The form below opens your local mail client and ships the message to my inbox.
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