Worked on the mem0ai/mem0 repository to enhance backend data integrity and query reliability by addressing a key issue in server-side data filtering. Refactored the filter logic in Python to prevent empty-string entity IDs from being forwarded as filters, thereby reducing the occurrence of invalid queries and improving the accuracy of analytics results. Focused on maintainable code and clear documentation, the work demonstrated a rigorous approach to backend development and API design. Collaboration was emphasized through co-authored commits, ensuring traceability and shared ownership. The targeted bug fix contributed to more trustworthy data processing and analytics within the existing backend infrastructure.