lionellimol

Built the blockchain integration layer for an EVM arbitrage bot, focused on DEX connectivity, transaction analysis, and execution preparation rather than trading operations. Modeled Uniswap-style AMM architecture, pool/router contracts, reserve reads, swap function behavior, calldata/events, liquidity movements, and opcode-level review when needed.

Implemented and reviewed Solidity smart contracts for tokenization, investor access controls, on-chain lifecycle operations, and compliance-sensitive flows. Integrated contracts with backend/API workflows and supported secure interaction patterns between off-chain services and EVM contracts using Foundry/Hardhat practices.

Reviewed smart contract logic, protocol assumptions, integration risks, access-control paths, transaction flows, and failure modes; produced audit-oriented remediation guidance.

Contributed to EVM infrastructure and developer usability, including OP Stack / OP Bedrock documentation, data availability concepts, and smart contract/backend integration guidance.

Taught Solidity, Ethereum/EVM, smart contracts, wallets, transactions, ethers.js, MetaMask, Web3 integration patterns, and mentored learners through code reviews and debugging.

Led blockchain and backend development for Flow-based NFT marketplace products, covering Cadence smart contracts, API integrations, and production delivery. Built and maintained Node.js, TypeScript, Express, MongoDB, REST API, AWS/serverless, and FCL services for marketplace operations and blockchain workflows. Improved release reliability with automated testing, CI/CD preparation, AI-assisted code review workflows, and backend/blockchain delivery coordination.

Built React and TypeScript marketplace features on Flow with FCL, Cadence, Chakra UI, Jest, REST API integration, and product/design collaboration.