Lee Jing Yi

Senior blockchain developer with over 8 years of hands-on work in EVM-based systems. I build and check smart contracts, full-stack applications, and cross-chain tools. I have strong skills in DeFi, smart contract security, and cloud systems (AWS, Heroku). I also work with AI tools to make development faster. I have recently started building Solana programs using Rust and the Anchor framework. I hold a Mensa membership.

Senior Blockchain Engineer at o1.exchange (2026-01 – 2026-07)

• Built core smart contracts and features for a multi-chain DeFi trading terminal (competing with Axiom and GMGN).
• Built custom swap router (SwapX) from scratch supporting 7 DEXes on BSC and Base, with UUPS upgradeable proxy, Permit2, and CREATE2 for same address across all EVM chains.
• Designed and built multi-chain trading (Base + BSC + Solana), with cross-chain swaps through Relay bridge and gasless trading via EIP-7702 paymaster — users trade with USDC, no ETH needed.

Senior Solidity Developer at Clearpool (2025-06 – 2025-12)

• Deployed and maintained vault and staking contracts, ensuring secure fund flows and user deposits.
• Designed and implemented advanced borrowing and lending mechanisms with integrated reward distribution, with borrowing as the core functionality of the platform.
• Developed Real-World Asset (RWA) vaults and automated fund allocation to Aave, optimizing yield while maintaining seamless wallet integration.
• Built cross-chain bridges to enable asset transfers between different blockchain networks.
• Implemented SubQuery/SubSquid indexing pipelines with PostgreSQL to efficiently store and query blockchain data.
• Leveraged cloud infrastructure using Cloudflare and Vercel for high-performance, scalable deployment.

Web3 Manager at Avium (2024-04 – 2025-06)

• Developed and integrated smart contracts for Staking, Rewards, Presale, ERC20, and ERC721 using Nest.js and Next.js
• Built a Hyperliquid Spot Connector in Python for automated trading
• Created a Telegram bot with clan and wallet management, trading (buy/sell), withdrawals, and settings modules
• Explored AI tool, including MCP code generation via Cline and Winsurf

Solidity Auditor at Code4Arena (2022-09 – 2024-02)

• Audited solidity smart contracts for vulnerabilities and optimized gas usage.

Crypto Software Engineer at Cake DeFi (2020-03 – 2022-06)

• Developed and deployed CeFi and DeFi products, including Oracle and Loan Systems using React, Node.js, and Solidity.

Blockchain Integration Specialist at Einnity Crypto Exchange (2018-08 – 2020-01)

• Synced nodes for Bitcoin, Ethereum, XRP, EOS, ERC20, and Tron to support crypto exchange operations.

Developer / Team Lead at Various Companies (2006-07 – 2018-07)

• Managed and led software development teams across ERP, insurance, and other industries.
• Proficient in building and maintaining scalable, containerized systems using Kubernetes, with hands-on experience

Bachelor in Computer and Information Technology – University of South Australia (2006)