Worked on the special-char/intern-pd-fe and Max-Eee/E-commerce-recommender repositories, delivering both new features and reliability improvements. Built a scalable UI framework by integrating shadcn/ui, implementing theming with CSS variables, and updating typography, while refactoring component organization for maintainability using React and TypeScript. Redesigned the product card and home page to support variant selection and enhanced visual sections, and optimized cart performance by reducing unnecessary API calls. In Max-Eee/E-commerce-recommender, addressed authentication issues by ensuring tokens are correctly issued and stored at signup, improving session stability and onboarding security. Demonstrated strengths in frontend development, authentication, and responsive design.