Sebastian Vetter refactored the S2 correction pipeline in the XENONnT/straxen repository, replacing a rigid set of intermediate corrections with a flexible binary encoding system. This approach simplified the logic for generating corrected S2 areas and their top fractions, making the codebase easier to maintain and extend for future scientific computing needs. Working primarily in Python and leveraging skills in data analysis and physics simulation, Sebastian’s work addressed maintainability challenges by streamlining correction application logic. The refactor closed a critical task, enabling more adaptable handling of S2 corrections and laying groundwork for future enhancements in the experiment’s data processing pipeline.