Worked on SpaceCat Audit Worker and SpaceCat API Service, delivering two features focused on user experience and analytics. Enhanced the Audit Worker by refreshing opportunity messaging and UX, making titles and descriptions more user-friendly and benefit-oriented to improve comprehension and engagement. In the API Service, extended profiles.json with new fields to support weekly Core Web Vitals insights and engagement tracking, enabling better data-driven decisions. Employed JavaScript and JSON for API development, front end improvements, and data modeling. Reinforced release-note traceability and onboarding flows, establishing a foundation for ongoing performance optimization without introducing defects during the development period.