Responsible for the construction of application security capabilities of Douyin products, including but not limited to Web runtime security, Web build-time security, Node.js server security, front-end supply chain security, cross-platform container security, etc. Protect Douyin, Xigua, Jianying and other products. 1. Participate in the design and development of Douyin application security platform, including full-stack development of front-end/Node.js services 2. Participate in the design and development of systemic security solutions, including but not limited to Web runtime security SDK, Web Build tool security plug-ins, Node.js security middleware, code analysis tools based on bytecode and AST, cross-platform container security and other research and development directions 3. Responsible for technical research and innovative technology research, and continuously enhance the coverage and coverage of security solutions Use experience.