Landry Huet developed support for importing multi-terminal DC (MTDC) subnetworks from DGS files in the powsybl-core repository, enhancing HVDC converter modeling and data handling. He redesigned data structures in Java to enable deterministic traversal and efficient lookups for HVDC subgrids, and incorporated ground elements to improve network representation. Landry expanded unit testing coverage and updated documentation to reflect these architectural changes, ensuring reliability and clarity. He also refined sign conventions and unit conversions, addressing data integrity and export consistency for HVDC systems. The work demonstrated depth in full stack development, with careful attention to both implementation details and maintainability.