Developed an interactive geospatial demonstration for the highcharts/highcharts repository, focusing on visualizing the top 100 US cities by population. Leveraging JavaScript and Highcharts Maps with OpenStreetMap tiles, the solution introduced bubble-size encoding to represent population data, along with pan and zoom navigation for enhanced user interaction. The demo emphasized real-time data-driven tooltips and performance optimization to ensure smooth handling of large datasets. By delivering a reusable, customer-facing visualization, the work accelerated customer onboarding and evaluation processes. The project showcased expertise in data visualization and front end development, with particular attention to scalability and user experience for geospatial applications.