Worked on CollaboraOnline/online to deliver German user interface localization for both the web-based Collabora Online and the Collabora Office macOS application. Focused on expanding accessibility for German-speaking users, the work involved updating translation files using Weblate and ensuring traceability through signed-off commits and Change-Id references. Utilized C++ and PO file formats within a Qt-based environment to achieve high translation coverage, reaching 96 percent for the Qt app and over 80 percent for the macOS app. The approach established a repeatable localization workflow, positioning the product for broader German-market adoption and smoother future translation updates across platforms.