At NAS Recruitment, I embarked on a project that involved developing data visualizations using Power BI, which were subsequently made accessible through a React-based web application via Power BI Embedded online platform. This setup allowed users to customize their dashboards to meet their specific needs. To accomplish this, my responsibilities encompassed not only extracting, transforming, and visualizing data but also optimizing DAX code to efficiently handle the extensive volume of data involved, running into millions of rows per client.