Jooyeon worked on the SpinalHDL/SpinalHDL repository, focusing on enhancing the configurability and scalability of the arithmetic core. She implemented a dynamic Mantissa width parameter for the extendedMantissa component, replacing the previously hardcoded value of 32 with a configurable option. This change allows the module to support varying input sizes and prepares the codebase for future growth. Using Scala and applying principles of backend development and functional programming, Jooyeon removed magic numbers and improved maintainability. Her work demonstrated careful architectural refactoring and parameterization, resulting in a more flexible and future-proof numeric core without introducing new bugs.