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Web3 Wallet

Seasoned software developer with over 20 years of hands-on experience in building robust applications and systems. My career highlights include 9 years in Java-based business system development, where I've designed and implemented scalable enterprise solutions. I've also spent 3 years in Android R&D, specializing in Android TV development and creating Scantrust QR anti-counterfeiting client apps for enhanced security and user experiences.

For the past 8 years, I've focused on blockchain technology, primarily working with Chinese domestic banks on Quorum-based permissioned chains and developing Web3 digital currency wallets to ensure secure, decentralized financial solutions.

I'm proficient in Java and Node.js, with strong familiarity in Go, Python, Solidity, and React Native. Passionate about cutting-edge technologies, I'm eager to solve complex challenges in dynamic environments.

Currently seeking senior roles in blockchain engineering, mobile development, or full-stack architecture, ideally in fintech, Web3, or enterprise software sectors. Open to remote or hybrid opportunities worldwide to leverage my expertise for innovative projects.

Experience: 10 years

Yearly salary: $100,000

Hourly rate: $50

Nationality: 🇨🇳 China

Residency: 🇨🇳 China

Experience

Web3 and Crypto Wallet Developer

青岛利思诺工程有限公司

2022 - 2025

OneWallet Web3 Wallet Development Developed a Web3 wallet for OneWallet based on React Native, integrating with Ethereum, Binance Smart Chain (BSC), and other EVM chains, as well as EVM-based Layer 2 protocols. Also integrated with Tron and Bitcoin networks. Supported tokens including ERC20, BEP20, TRC20, and stablecoins such as USDT and USDC. Primarily responsible for developing backend API interfaces and the wallet's transaction signing SDK. Integrated with WalletConnect and third-party DApps, enabling seamless interaction between the wallet and decentralized applications.

blockchain developer

青岛闪收付信息技术有限公司

2017 - 2022

Ethereum Blockchain Development: Developed enterprise permissioned blockchain based on the POA-clique consensus algorithm for Ethereum's underlying chain. Alliance Chain Development: Built consortium blockchain using Quorum POA and IBFT consensus algorithms. Bank Node Deployment and Implementation: Deployed and implemented blockchain nodes for various banking institutions. Blockchain Project Lead: Served as the blockchain project lead, overseeing the research and development efforts for the company's blockchain projects. Major projects during tenure included: Qingdao Customs Blockchain System: Developed a blockchain system for the customs declaration process. Qilu Bank & Qingdao Metro N+1 Structured Re-factoring Blockchain System: Led the development of a blockchain-based structured re-factoring system for Qilu Bank and Qingdao Metro. Blockchain-based Supply Chain Finance Consortium Blockchain: Led the deployment of blockchain nodes for various banks, including: Industrial and Commercial Bank of China (ICBC) Qingdao Branch Bank of Communications Qingdao Branch Bank of Beijing Shandong Branch Qilu Bank Headquarters Industrial Bank Qingdao Branch China Merchants Bank Qingdao Branch Agricultural Bank of China Qingdao Branch Pudong Development Bank Qingdao Branch Huaxia Bank Qingdao Branch China Minsheng Bank Qingdao Branch Ping An Bank Qingdao Branch China Construction Bank Qingdao Branch

Skills

java

postgres

redis

web3js

node

chinese-mandarin

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