GIS mapping jobs focus on the support and use of the geographic information system, which uses multiple layers of data to create maps for many different purposes. In this field, you may help gather and verify information for the system, use software to track your routes, and prepare customized maps and reports as needed. You may be asked to prioritize tasks, network with others to minimize duplication of effort, resolve customer or client inquiries, and interpret construction documents. Many GIS mapping jobs involve a significant amount of fieldwork, but analysis professionals usually work from a home or company office.