Simon Cello developed two core features over two months, focusing on enhancing data handling and export robustness in the root-project/root and ferdymercury/root repositories. He implemented the PiecewiseInterpolationFactory: Functions as Variables feature, enabling functions to be used as variables for more flexible data interpolation in C++. In ferdymercury/root, Simon delivered improvements to snapshot export reliability by including global observables, preserving unbinned data range information, and adding safeguards for zero-yield bins. His work leveraged C++ programming, data analysis, and statistical modeling, demonstrating depth in addressing data integrity and flexibility challenges within complex scientific software environments.