Responsibilities: 1. Research and develop blockchain wallet underlying infrastructure, conduct requirement analysis and technical planning, and align with business and product needs, including but not limited to the following. 2. Design, develop, upgrade, and optimize the performance of wallet backend services, resolving technical challenges in systems and projects. 3. Integrate with multiple blockchain networks, support deposit and withdrawal operations for new tokens, and ensure efficient operation of core modules such as fund aggregation and fee estimation. 4. Maintain full nodes of blockchain networks, monitor and promptly implement network upgrades and announcements to ensure the stable and reliable operation of the wallet system. 5. Conduct research on cutting-edge blockchain wallet technologies—such as multi-party computation (MPC)—and explore emerging public chains and ecosystems. Qualifications: 1. Bachelor’s degree or higher in Computer Science, Software Engineering, Cryptography, or a related field. 2. At least 3 years of professional experience in blockchain technology or a related domain. 3. Proficiency in Go, Java, Solidity, or other relevant programming languages, and familiarity with common data structures and algorithms. 4. Strong interest in blockchain infrastructure; familiarity with blockchain projects. Candidates with a blockchain industry background and cryptographic knowledge are preferred. 5. Excellent teamwork, communication, and problem-solving skills.