Worked on the h5p/h5p-multi-media-choice repository to deliver a localization enhancement by adding a Greek translation for the Show solution button through an el.json update. This targeted improvement addressed accessibility and user experience for Greek-speaking users, aligning with the broader localization roadmap and supporting market expansion. The approach involved careful JSON data manipulation to ensure backwards compatibility and safe integration, with all changes managed via Git version control and peer code review. Demonstrated skills in internationalization, accessibility, and collaborative workflows, resulting in improved usability and reduced language barriers for Greek-speaking audiences without introducing regressions or impacting existing functionality.