During November 2024, contributed to the ridhofrd/monitoringTeltonika repository by designing and implementing a Rental Extension Management feature. This work involved developing backend API endpoints using Node.js and PostgreSQL to fetch and update rental extension data, as well as building a React-based frontend component and modal interface for users to view and manage current rentals. The integration between backend and frontend enabled seamless extension workflows and improved rental visibility. The focus remained on delivering robust feature functionality and maintaining code quality, with no major bugs reported during the period. JavaScript and SQL were used throughout to ensure reliable data handling and user experience.