As a field engineer, your main responsibilities include the installation, operation, repair, and maintenance of equipment, machinery, or facilities in a number of industries. Field engineers can work in the construction, telecommunication, energy, oil and gas, and manufacturing industries, to name just a few. Your specific duties depend on the field in which you work, but you typically must travel to a work site to inspect it before they install a machine or piece of equipment and travel whenever equipment is experiencing technical issues.