Worked on PowerSystems.jl to enhance data modeling accuracy and testing reliability for power systems analysis. Developed support for per-unit conversion of zip load components by extending the _make_per_unit! function, enabling more precise data scaling and representation of load types within the Julia-based framework. Addressed test suite validity by updating parsing logic for PSSE component test values, ensuring that active and reactive power expectations aligned with revised units and logic. Applied skills in data parsing, power systems modeling, and testing to deliver targeted improvements, focusing on both feature development and bug resolution to support robust, business-critical workflows in power systems analysis.