1. Responsible for the architecture design and development of the core backend system, using mainstream languages such as Go/Node.js/Python/Java; 2. Maintain and optimize database systems (MySQL, PostgreSQL, MongoDB, or Redis); 3. Write and independently deploy and debug smart contracts (Solidity/Rust); 4. Understand the underlying architecture of EVM or Solana, familiar with the transaction signature process and execution mechanism; 5. Deploy on chain services, optimize performance, and manage security risks; 6. Participate in data processing using on chain indexing tools such as The Graph and SubQuery; 7. Build a secure and efficient CI/CD process, and use DevOps tools to ensure the stable operation of backend systems.