Carlo Sobrepeña contributed to kredo-school’s 27th_yourchoice and 30th_hop-quest repositories, focusing on backend and full stack development using Laravel, PHP, and JavaScript. He reintroduced and streamlined database seeding for hotel categories, enabling faster test cycles and reducing onboarding time for new testers. In hop-quest, Carlo removed obsolete migrations and deprecated modules to reduce technical debt, while enhancing the frontend asset pipeline with new Vite entry points for user profiles and quest management. He also simplified deployment configuration, improving reliability. His work demonstrated a methodical approach to codebase maintenance, operational efficiency, and expanding user-facing features within a short timeframe.