In upper-division courses, students specialize in a particular kind of engineering, such as aerospace or architectural engineering, chemical or civil engineering, computer engineering, electrical or environmental engineering, mechanical engineering, or metallurgical and materials engineering. So does General Motors. So does Ford. So do government agencies such as the Federal Aviation Administration or the Environmental Protection Agency. So do the armed services.
Some engineers work in research laboratories.
Some work in office buildings. Some work in the field. Some work alone. Some work in project teams. Because technology is constantly changing, engineers have to change with the times.