Worked on the lfortran/lfortran repository to address a correctness issue involving intrinsic module handling in Fortran code. Delivered a targeted bug fix that ensures the 'intrinsic' attribute is properly applied to module use statements, which stabilizes the ASR to Fortran translation path and improves the reliability of integration and unit tests. The solution was implemented as a focused patch, merged through the standard pull request workflow. Utilized Fortran and CMake, with an emphasis on robust testing practices, to maintain code health and reduce test flakiness. The work demonstrated a strong understanding of compiler internals and precise problem resolution.