During October 2025, Riccardo Rossi focused on enhancing the stability and forward compatibility of the KratosMultiphysics/Kratos repository, specifically targeting the core linear solver components. He addressed two critical bugs by introducing a Clear() call within the Solve() method to ensure the solver’s internal state resets between runs, preventing cross-solve contamination. Additionally, he resolved a type conversion issue by explicitly casting an enum to double in the nodal_distance calculation, ensuring compliance with C++20 standards. His work demonstrated strong C++ development skills, careful regression debugging, and a precise approach to code maintenance, resulting in more robust and maintainable solver behavior.