Developed RBAC-based tagging permission enforcement for the zenml-io/zenml repository, focusing on strengthening access control for tagging and untagging resources. Leveraged Python, FastAPI, and SQLAlchemy to implement mandatory UPDATE permission checks through a reusable helper function, ensuring only authorized users could modify tags. Optimized backend resource resolution to support fast, bulk permission verification, which prepares the system for scalable multi-resource operations. This work aligned with ongoing security and compliance initiatives, reducing the risk of unauthorized tag changes. The approach emphasized backend development best practices and included unit testing to ensure robust, maintainable permission handling for complex resource management scenarios.