Developed and integrated a slope chart visualization into the Visual Vocabulary Demo within the mckinsey/vizro repository, enabling users to compare changes over time or rankings side by side. The feature was implemented using Python and Plotly, focusing on seamless integration with existing demo components to enhance data storytelling and analytical workflows. The work emphasized clear Git collaboration practices, including detailed commit messages and explicit co-authorship acknowledgment. By surfacing trends and comparative changes directly in the demo, the contribution improved user insights and workflow efficiency, demonstrating skills in data visualization design, framework integration, and collaborative software development within a production codebase.