Roozbeh worked on the unicode-org/cldr repository, focusing on enhancing the stability of locale identifiers through documentation-driven feature development. He authored detailed Markdown documentation that clarified the handling of Iran’s subdivision codes, introducing a 4-character suffix mechanism to maintain stable locale identifiers when ISO 3166-2 codes change. This approach addressed the risk of code reassignments disrupting localization pipelines, supporting long-term maintainability across downstream systems. Roozbeh’s work demonstrated strong technical writing and documentation skills, aligning with internationalization standards and improving the clarity of CLDR specifications. The depth of the update provided a robust foundation for future localization reliability and consistency.