During their recent work, Iucar contributed to both the rstudio/rstudio and satijalab/seurat repositories, focusing on build reliability and algorithm optimization using C++. In rstudio/rstudio, Iucar resolved a critical cross-platform compilation issue by ensuring the availability of uintmax_t in Message.hpp, improving CI stability and aligning header dependencies with project standards. In satijalab/seurat, Iucar enhanced the RModularityOptimizer component by removing redundant exception handling, which streamlined the code and improved performance. Their work demonstrated a strong grasp of build systems, error handling, and C++ development, addressing both maintainability and reliability in complex, multi-platform codebases over a two-month period.