Jaehee Han developed the Multilingual Translation Guidelines for the kufu/smarthr-design-system repository, focusing on establishing a foundation for internationalization within the SmartHR design system. Using Markdown for documentation, Jaehee outlined comprehensive translation policies, including background context, target user profiles, and supported languages, to standardize localization practices across products. The work emphasized clarity and consistency, ensuring that future translations would be accurate and user-focused. By formalizing these guidelines, Jaehee enabled the design system to be more localization-ready, reducing translation risks and streamlining future feature development. The contribution demonstrated depth in documentation and internationalization, addressing both technical and user experience needs.