An ArcPy developer uses Python programming language to create, manage, and analyze geographic data in ArcGIS, a spatial analysis platform developed by Esri. They automate geographic information system (GIS) tasks, including map production, data management, and spatial analysis. They write scripts to manipulate data and perform complex spatial operations, using ArcPy's functions, classes, and modules. They may also create custom tools and extensions in ArcGIS to meet specific needs, and often work in industries like environmental science, urban planning, or transportation, where spatial data analysis is crucial. Their goal is to enhance data accuracy, efficiency, and decision-making.