Worked on the DLR-AMR/t8code repository to deliver targeted reliability and performance improvements in C++ using CMake and VTK. Addressed header installation issues by ensuring critical files like t8_vec.h and t8_forest_types.h are properly included, reducing installation failures. Modernized the VTK writer by pre-allocating memory, switching to vtkIdType arrays, and leveraging vtkMergePoints for efficient deduplication, which lowered memory usage and processing time for large outputs. Enhanced code quality through formatting and refactoring aligned with project standards. Also clarified project governance by adding a BSD license notice, improving transparency around author contributions and licensing for future development.