I specialize in the field of enterprise-level custom software development, focusing on undertaking full-process development and supporting testing services for various management software and tool software. Specifically, my services cover: development of OA System (Office Automation System), project management software, MIS (Management Information System), as well as custom development of other management software, other tool software and system tools; I also provide professional back-end development and full-process testing services, covering the entire cycle of requirement breakdown, architecture design, code development, functional testing and performance optimization. With extensive experience in the implementation of enterprise-level software, I am familiar with the business logic and technical adaptation requirements of various management systems. I can customize solutions according to the needs of enterprises of different scales and scenarios, ensuring system stability, data security and operational ease of use. Flexible cooperation modes are supported, with efficient response to demand adjustments, helping enterprises realize digitalization of management processes and high efficiency of tool application.