Alexander Mendoza contributed to the Pearson-Advance/edx-platform repository by developing a front-end feature that disables LLM-based summarization in the notes functionality. He achieved this by removing the llm_summarize plugin from the default AnnotatorJS plugins, focusing on privacy and performance improvements. Using JavaScript and front-end development skills, Alexander centralized the plugin configuration change in a single, reviewable commit, which enhances maintainability and auditability. This update reduces unnecessary compute usage and minimizes data exposure, aligning with privacy-by-default principles. During this period, his work centered on feature delivery rather than bug fixes, reflecting a targeted and thoughtful approach to platform configuration.