Oleksandra Zakharova developed user-facing features and enhancements across two repositories, including Dutko-Diana/super-team-project and t-matveentsev/project_Lucky7_front. She built a dynamic Covers marquee display with animated scrolling and responsive design, improving image handling and maintainability using HTML, CSS, and JavaScript. On the Lucky7 project, she enhanced registration and login flows with mobile-first UI/UX improvements, form validation via Formik, and robust authentication error handling. Her work included performance optimizations through lazy loading and code refactoring for future scalability. Zakharova’s contributions demonstrated a strong grasp of React, Redux, and CSS Modules, delivering maintainable, user-centric front-end solutions.