An Incanter developer primarily utilizes the Incanter library for statistical computing and visualizations in Clojure programming language. They manipulate, analyze, and visualize data using Incanter's datasets and statistical functions. They process large volumes of data for data analysis, statistical modeling, and machine learning. Their job also includes creating visually appealing and insightful charts, graphs, and plots for data representation. They often work closely with data scientists, helping them understand complex data and make data-driven decisions. Understanding of statistical analysis and strong problem-solving skills are crucial for an Incanter developer. They also maintain and improve the Incanter library.