qinmenghuan
Full Stack Engineer(web3/Js)
Hi, I’m Menghuan Qin, a full-stack engineer with 13 years of experience, including 3 years in Web3 and DeFi.
I’ve owned core modules of DeFi lending and staking products end-to-end, covering frontend, backend, and on-chain flows like supply, borrow, repay, and state sync.
My stack includes Next.js, TypeScript, wagmi, and ethers.js, with a NestJS + PostgreSQL + Redis backend. I also work with Solidity and Hardhat.
Experienced in performance optimization and building reusable hooks and components to boost team productivity.
I’m looking to contribute to more advanced Web3 protocols or products.
Experience: 11 years
Yearly salary: $70,000
Hourly rate: $30
Nationality: 🇨🇳 China
Residency: 🇨🇳 China
Experience
Web3 Full-Stack Engineer (JS)
Morpho 2023 - 2026
1.Core Business: Built DeFi staking/lending modules, ensured secure frontend‑contract interaction; contributed to Solidity, Hardhat tests, and Nest.js APIs. 2.Architecture Design: Designed Next.js/Wagmi/Viem frontend and Nest/PostgreSQL/Redis backend; created reusable Web3 hooks to boost team efficiency. 3.Performance Optimization: Improved data loading efficiency by 30–40% via code splitting, Multicall batching, virtual scrolling, and Zustand.
Senior Front-end Developer
Tuhu.cn 2020 - 2025
Developed and maintained a new frontend framework, defined coding standards, and supported business teams using Vue, React, Vite, and TypeScript. Optimized code and features based on key frontend performance metrics, including FCP, LCP, JavaScript error rate, and overall bug rate. Led a 10-person frontend team to build the company's oil trading platform from scratch, ensuring smooth project delivery, high quality, and strong scalability.
Front-end Team Leader
Guanggu Jinxin (Wuhan) Technology Co., Ltd 2017 - 2020
Skilled in Vue, Vuex, React, Webpack, Sass, ES6, and Node.js, with solid experience building scalable and maintainable web applications. Managed a frontend team of 10+ members, leading hiring, technical training, and framework design to improve team efficiency and code quality. Led the end-to-end frontend development of Guo Rong Net, a supply chain finance platform, ensuring strong performance and a smooth user experience.
Senior front-end development engineer
Beijing Kaike Weizhi Technology Co., Ltd 2016 - 2017
Managed a front-end team of around five members, supporting web and mobile front-end development, and ensured efficient delivery of high-quality front-end features. Maintained the company's front-end React development framework and coding standards. Provided well-reasoned solutions to technical challenges.
Skills
ethereumjs
hardhat
nestjs
nextjs
postgres
react
solidity
full-stack
english
chinese-mandarin