During March 2025, Khoa Nguyen developed a reusable TimeRemaining countdown component for the khoanguyen-st/greenPREP repository. This React-based feature was engineered in JavaScript to standardize the countdown experience across multiple skill sections, providing users with consistent time formatting and a visual progress bar. The component automatically triggers a submit action when the timer expires, streamlining user workflows and reducing manual intervention. Designed for easy integration, it enables faster rollout of future features while maintaining a cohesive user interface. The work demonstrated a focused approach to front end development, emphasizing reusability and maintainability, though it addressed only a single feature.