Worked on the gridap/Gridap.jl repository, focusing on improving the accuracy of time-dependent simulations in scientific computing. Addressed a subtle bug in the handling of time-derivative tagging within TransientSingleFieldCellField, specifically for skeleton triangulations, by ensuring correct use of CellFieldAt{:minus} when accessing minus-side data. This fix prevented silent errors in the computation of jump terms, enhancing the reliability of finite element method (FEM) simulations. Demonstrated expertise in Julia, algorithm optimization, and numerical methods while collaborating through version-controlled workflows and rigorous code review. The work reflected a deep understanding of FEM data structures and simulation correctness.