Stepan Klíma developed a feature for the MONETA-SmartBanka/localization-json repository that unified menu item translations across multiple languages while integrating analytics tagging for improved user interaction tracking. He approached the problem by consolidating localization strings and standardizing translation naming conventions, ensuring consistency and deployment readiness for both QA and production environments. Using JSON as the primary language, Stepan applied his skills in data management, internationalization, and localization to streamline the process and facilitate collaboration with analytics stakeholders. The work focused on enabling data-driven UX improvements and provided a foundation for more reliable event tracking without introducing new bugs during the development period.