We are looking for an experienced Web3 backend engineer who specializes in smart contract development and can provide strong backend support for our blockchain project. This position requires candidates to have a solid ability to write smart contracts, be familiar with mainstream blockchain technology, and have some Java development experience to provide support for the development and maintenance of backend systems when necessary. Main responsibilities: Design, develop, and deploy smart contracts to ensure code security, scalability, and efficiency. *Collaborate with front-end engineers to integrate blockchain and front-end applications, ensuring the smooth operation of DApps. *Optimize smart contracts, reduce gas costs, and conduct code audits to improve security. *Write test cases related to smart contracts to ensure the accuracy and reliability of contract logic. *Participate in the development and maintenance of backend systems, mainly using Java to write application logic. *Resolve and troubleshoot issues related to blockchain integration to ensure system stability and performance. *Pay attention to the dynamics of the blockchain industry, continuously learn and introduce new technologies and best practices.