K. Jefferson enhanced the nightingaleproject/vital-records-dotnet repository by expanding the BFDR.CLI tool to process fetal death records in addition to birth records. They refactored the command-line interface to accept a record type argument, updating both the command parsing logic and related documentation. Working primarily in C#, Jefferson applied skills in CLI development, data conversion, and record processing to ensure the new functionality integrated smoothly with existing FHIR and IJE workflows. The updates improved maintainability and test coverage, laying groundwork for broader data processing in future releases. Their work addressed evolving data requirements with a focused, maintainable engineering approach.