Mozzy Mutesa contributed to both backend and frontend engineering across two repositories over a two-month period. In google/fhir-data-pipes, Mozzy developed a configurable data synchronization feature that introduced a generateParquetFiles flag, allowing teams to disable unnecessary Parquet file generation and thereby optimize I/O and storage usage. Using TypeScript and configuration management skills, Mozzy improved resource efficiency for data engineering workflows. In openmrs/openmrs-esm-patient-chart, Mozzy enhanced the Patient Conditions UI by implementing internationalization for the Active status filter and enforced stricter date validation logic, leveraging React and date manipulation expertise to improve global usability and data integrity in patient chart workflows.