1. Responsible for the frontend and backend development and operation and maintenance of the company's 10+ year old B2B online education platform, which includes PC, H5, mobile, and multiple backend management systems. The platform has a large number of historical functions and business, and new and old technologies and systems coexist long-term. 2. Responsible for the frontend refactoring of new versions and the migration of some historical functions, participating in the integration of multiple frontend subsystems, and handling issues such as login, permissions, routing, interface compatibility, cross-domain, and coexistence of new and old systems. 3. Responsible for project development, testing, and production environment, including Linux servers, Nginx reverse proxy, domain name resolution, HTTPS certificates, static resource deployment, and online issue troubleshooting. 4. Responsible for the maintenance and compatibility of mobile, PC Web, and historical PHP pages, and gradually completing the migration of old functions to new systems based on actual business. 5. Independently completed the construction of the RAGFlow enterprise knowledge base system, and participated in the development of AI intelligent Q&A, course knowledge training, and other AI functions and business system integration. 6. Extensively used Agent in project development to assist in analyzing large historical codebases, participating in requirements decomposition, solution design, feature development, code refactoring, issue locating, and technical documentation.

1. Participated in the development of XCMG industrial product management related systems. The project uses the company's internal closed-source framework and is developed in a virtual desktop environment within a restricted internal network. 2. Due to the inability to access the public network in the development environment, and the internal documentation is incomplete, the framework information is scarce, and there are engine-specific issues, it is necessary to analyze and solve development problems through existing project code, running results, debugging information, and internal materials. 3. Responsible for Web frontend business function development, maintenance of existing functions, and framework compatibility issue handling, delivering project requirements in a restricted development environment. 4. Undertook frontend project management responsibilities within the project, responsible for Git code repository management, code commit and merge, Code Review, version management, and frontend release. 5. Participated in frontend R&D process and code quality management, coordinated the integration of developed code into testing and release processes, accumulating experience in project delivery in large enterprise internal network projects and restricted R&D environments.