Developed and delivered Spanish user interface translations for the OpenPanel repository, establishing a foundational es-ES language baseline to support internationalization and localization goals. The work involved duplicating existing en-US UI strings into Spanish, ensuring consistency and traceability by linking changes directly to the relevant ticket and commit. Using Python and leveraging localization best practices, the implementation improved accessibility for Spanish-speaking users and laid the groundwork for future multilingual enhancements. This targeted feature addressed business needs by enabling broader adoption in new markets, while maintaining a clear, single-repository workflow focused on quality and alignment with the overall internationalization strategy.