During June 2025, this developer established the foundational architecture for two Next.js applications, focusing on full-stack messaging features within the Programa-TrainIT-Ar/fe-trelloop-grupo-1 and grupo-2 repositories. They implemented initial UI components in React and TypeScript, enabling users to send and display messages by integrating frontend interfaces with backend APIs. The work emphasized consistent project scaffolding, including ESLint and PostCSS configuration, to streamline onboarding and maintain code quality. By laying out a clean separation between frontend and backend concerns, the developer created a scalable baseline for future enhancements such as real-time messaging and richer user interfaces using Tailwind CSS.