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Jimmy Lee

@jimmylee1

Senior blockchain developer at o1.exchange who built SwapX, a multi-chain router supporting seven DEXes on BSC and Base.

Malaysia

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At o1.exchange, I built core smart contracts and features for a multi-chain DeFi trading terminal. I created SwapX, a custom router supporting seven DEXes on BSC and Base.

I also designed multi-chain trading across Base, BSC, and Solana, including cross-chain swaps through Relay and gasless trading with USDC.

At Clearpool, I developed borrowing and lending mechanisms, reward distribution, and RWA vaults with automated fund allocation to Aave. I also implemented blockchain indexing pipelines with PostgreSQL.

Earlier, I developed DeFi and CeFi products at Cake DeFi and audited Solidity contracts at Code4Arena. My work spans smart contract development and security, DeFi, and full-stack blockchain applications.

Experience

Work history, roles, and key accomplishments

Senior Blockchain Engineer

o1.exchange

Jan 2026 - Jul 2026 (6 months)

Built core smart contracts and features for a multi-chain DeFi trading terminal, including a custom swap router supporting 7 DEXes on BSC and Base with UUPS upgradeable proxy, Permit2, and CREATE2. Designed multi-chain trading with cross-chain swaps and gasless trading via EIP-7702 paymaster.

Solidity Foundry React TypeScript CREATE2 UUPS Proxy Permit2 DeFi Cross Chain Technology EIP 7702

Senior Solidity Developer

Clearpool

Jun 2025 - Dec 2025 (6 months)

Deployed and maintained vault and staking contracts, designed borrowing and lending mechanisms with reward distribution, developed RWA vaults with automated fund allocation to Aave, built cross-chain bridges, and implemented SubQuery/SubSquid indexing pipelines with PostgreSQL.

Solidity React Next.js Wagmi Viem GraphQL PostgreSQL Vercel DeFi RWA Cross Chain Technology Sub Query Subsquid

Web3 Manager

Avium

Apr 2024 - Jun 2025 (1 year 2 months)

Developed and integrated smart contracts for Staking, Rewards, Presale, ERC20, and ERC721 using Nest.js and Next.js. Created a Telegram bot with clan and wallet management, trading, withdrawals, and settings modules.