During July 2025, Fernando Erbes enhanced numeric bounds handling in the dealii/dealii repository, focusing on safer initialization and boundary logic across multiple examples. He replaced legacy maximum bound initializations with std::numeric_limits<double>::lowest(), ensuring robust handling of negative infinity and reducing edge-case risks. Fernando updated CMake configurations to use this approach, preventing exceptions during string conversions. He also refactored bounds logic in sparsity_pattern.cc, adopting std::clamp for concise and reliable checks. Working primarily with C++ and CMake, Fernando demonstrated strong code refactoring and software engineering skills, delivering maintainable improvements that preserved existing behavior while increasing reliability and safety.