During September 2025, Hay15584 worked on the aemsites/ingredion repository, focusing on regional data accuracy and brand-consistent user experience for the Kerr/NA locale. They developed a dynamic favicon UI enhancement that adapts to user region and locale, improving branding consistency. Addressing backend data integrity, Hay15584 fixed Martech country extraction on the Kerrby page, ensuring correct defaults and accurate region mapping. They also rolled back Singapore-specific product APIs to reduce risk and API surface area. Their work demonstrated solid backend and frontend development skills using JavaScript, with careful attention to stability, maintainability, and the nuanced requirements of regionalized web applications.