Nitpreet worked on backend automation and data hygiene features across the tmlmobilidade/sae and carrismetropolitana/website repositories. He refactored validation cleanup logic to use an abstract data access layer, decoupling from direct MongoDB usage and leveraging Unix timestamp-based retention for maintainability. Nitpreet also implemented automated removal of outdated validation records and associated files, reducing storage needs and improving reliability. For carrismetropolitana/website, he developed a Node.js script to update panel fallback images by integrating API data and handling missing files gracefully. His work demonstrated depth in backend development, scripting, and database management using JavaScript, TypeScript, and robust error handling practices.