During a two-month period, Bastian Koepcke enhanced the Sirius Web and Sirius Biz repositories by delivering six features and resolving a key bug. He implemented multi-selection and multi-value facet filtering, enabling users to perform more flexible queries and navigation. His work included a core web server upgrade and dependency alignment, improving maintainability and stability across modules. In Sirius Web, Bastian enhanced TokenAutocomplete to support dynamic, configurable suggestions, streamlining frontend customization. He applied Java, JavaScript, and Maven to address both backend and frontend requirements, demonstrating depth in code quality improvements, robust feature delivery, and thoughtful handling of cross-repository compatibility challenges.