Yann Jobic enhanced mesh generation robustness in the dealii/dealii repository by introducing a tolerance-based matching mechanism for periodic faces. He addressed challenges with imprecise CAD geometries by allowing approximate matching of periodic nodes in the collect_periodic_faces function, using C++ and leveraging numerical methods. To ensure reliability, he developed a dedicated software test that validated the new approach under mesh distortion scenarios, confirming its effectiveness across varied mesh inputs. Yann’s work focused on improving the resilience of mesh generation workflows, demonstrating depth in both algorithmic design and practical software testing within the context of scientific computing and C++ development.