1. Design, write, and optimize smart contracts to ensure they are efficient, secure, and meet business needs. 2. Deploy smart contracts on the main network and test network to maintain the normal operation of the contracts. 3. Review and fix vulnerabilities in contracts to ensure the security of smart contracts. 4. Write, run, and maintain unit and integration tests for contracts. 5. Work closely with the front-end and back-end teams to ensure seamless integration of DApps. 6. Participate in technical design and architecture discussions of the project, and provide professional opinions. 7. Write and maintain technical documentation for smart contracts. 8. Participate in contract optimization and cost control to ensure the minimization of gas costs. 9. Track the latest technology and best practices in the blockchain industry, and continuously optimize the development process. 10. Complete other work tasks assigned by the leader.