Job description: Responsible for internal code auditing and security related work of the exchange, ensuring that product codes and systems comply with the highest security standards, and protecting user assets and data security. Main responsibilities: 1. Conduct security audits on the core code of the exchange (including smart contracts, front-end and back-end code), identify and fix vulnerabilities. 2. Participate in product design and development to ensure the integration of safety best practices into system architecture. 3. Develop automated security tools to improve code auditing efficiency. 4. Provide safety training to enhance team safety awareness. 5. Participate in emergency response to security incidents, quickly locate and solve problems.