Overview-More than 10 years in the field of security devices and security services. A relatively in-depth understanding and practical experience of end-to-end security.-Over 10 years of practical experience in applied cryptography and 5 years of experience in cryptographic machine (HSM) development, familiar with the product development process; familiar with and proficient in a variety of development languages, databases, systems, networks, etc., and can design corresponding products and system architectures for different scenarios.Proficient in the C language, has done embedded development (Linux based or no OS), with strong coding and tuning skills, familiar with Linux OS.-Strong system architecture skills, with excellent results in the company's system architecture practice, designing systems that are highly stable and scalable. Familiar with cloud-native system architecture design-Has many years of experience in the NFC and SE industries and has in-depth insights into the public transportation and bank card industries, as well as understanding the complete industry chain and industry division.-Has very strong problem solving skills and has solved problems for the company such as: improving business success rate, TSM Applet dynamic management, site information business, cryptographic machine algorithm extension, Mifare encrypted sector replication, etc. And in the process of solving problems, he has deposited several patents-Understanding of car digital key, did pre-research and interpretation of CCC3.0 specification, and pre-system planning of car digital key platform. Designed and applied for a patent for digital key based in-car payment during the pre-research process.- Has good communication skills, can adapt to various environments quickly, treats people warmly and sincerely, and works seriously and responsibly. Passionate about technology, love to learn and keep curious about new things. In spare time, also partially involved in blockchain and privacy computing.