As computing platforms evolved toward cloud computing and the Internet of Things, distributed systems faced challenges managing access control across variable user roles and dynamic authorization demands. Contributing to this research is Yizhou Meng, a software development engineer specializing in distributed systems architecture, secure access control, and cloud infrastructure scalability. Previous accomplishments span secure payment infrastructure development, cloud provisioning workflows, RESTful API optimization serving large user bases, and database performance improvements through multi-threading. Technical competencies encompass software architecture, cloud solutions, and back-end services development using Java, C#, Python, and .NET frameworks. The integration of hybrid access control research with enterprise-scale infrastructure engineering demonstrates how theoretical frameworks translate into production systems serving millions of users.