Contributed to development of blockchain protocol modules improving transaction validation efficiency by 28% and reducing black finalization latency by 22%. Built and tested smart contracts and protocol components using Solidity, EVM, and Hardhat, achieving 95%+ test coverage. Optimized gas usage and state transitions, lowering execution costs by 20% acress core contract functions. Assisted in improving P2P networking and node synchronization, reducing block propagation time by 18%. Identified and resolved 20+ protocol-level bugs through simulation testing and fuzzing.

Led end-to-end blockchain system architecture, including node infrastructure, wallet integrations, and on-chain/off-chain data pipelines. Implemented DeFi protocols, taken standards (ERC-28, ERC-721, ERC-11SS), and NFT-based systems for real-world use cases. Integrated blockchain applications with REST APIs, backend services, and cloud platforms for seamless product deployment. Conducted smart contract security audits, vulnerability testing, and mitigation of common exploits such as reentrancy and overflow attacks.