During March 2026, this developer delivered end-to-end Catalan language localization for the janhq/jan repository, focusing on expanding accessibility and supporting internationalization goals. The work involved creating comprehensive translation files and updating the React-based language switcher to seamlessly integrate Catalan as an option for users. Utilizing JavaScript and front end development skills, the implementation established a consistent workflow for future localization efforts. By enabling Catalan support, the project improved the user experience for Catalan-speaking customers and laid the groundwork for onboarding additional languages. The changes were co-authored, reflecting a collaborative approach and adherence to code quality and review standards.