Haesik Yee contributed to the sfbrigade/datasci-earthquake repository by developing a performance-focused enhancement for the search functionality. Using JavaScript, React, and Next.js, Haesik introduced memoization within the search bar component to cache results and minimize unnecessary re-renders, directly addressing performance and maintainability concerns at the UI level. This approach not only improved search responsiveness but also simplified future feature development by reducing redundant computations. In addition to technical improvements, Haesik updated the project’s data file to onboard a new team member, supporting collaboration. The work demonstrated a targeted, maintainable solution to a specific performance bottleneck within a short timeframe.