John Rigel Q. Galeos developed two public API endpoints for the cerenimbus/PrefPic repository, focusing on enhancing data access and administrative workflows. He implemented GetProcedure to retrieve procedure details with associated images, incorporating security checks, authorization validation, and subscriber ownership verification to ensure data integrity. For GetTeamList, he designed a hash-based secure authorization mechanism and delivered XML-formatted responses, supporting efficient team data retrieval. Working primarily in PHP, John applied his skills in API development, backend engineering, and database integration. His work strengthened the security posture of the platform and laid groundwork for scalable, efficient API-driven operations for subscribers and admins.