Worked on the scrumdojo/quizmaster repository to deliver two core features focused on improving quiz usability and evaluation flow. Developed a keyboard-friendly numeric input experience, enhancing accessibility by supporting both numeric and numpad keys, Enter-based submission, input validation, and autofocus for faster quiz completion. Refined the results and evaluation process by streamlining navigation and clarifying evaluation controls, reducing user friction and support needs. Emphasized reliability and intuitive navigation through iterative testing and targeted React and TypeScript development. The work prioritized accessibility and speed, resulting in a more efficient and user-friendly quiz interface without introducing new bugs during the development period.