Worked on the insightsengineering/tern repository to enhance statistical analysis capabilities by implementing the Cochran-Mantel-Haenszel proportion difference confidence interval method using the Sato variance estimator. Leveraging R programming and statistical analysis skills, introduced flexible formatting options for the analyze_vars function, including a default format and a formats_var argument, which streamlined reporting and allowed greater customization for analysts. Collaborated across teams and managed internal branches to address CI/CD challenges, ensuring smooth integration of new features. The work focused on improving analytics workflows and reducing downstream formatting effort, demonstrating depth in both statistical methodology and practical data visualization within the R ecosystem.