You may be aware of the most common engineering subspecialties, like civil engineering ( design of roads, bridges, buildings), computer engineering (design of computer hardware), and electrical and electronic engineering (design of electrical and electronic systems). There are literally hundreds of different job titles under the engineering.

Few engineering roles:

Aerospace engineers : Develop airplanes, spacecraft, missiles, and other vehicles and machines that fly here in Earth's atmosphere or in outer space. Aerospace engineers who specialize in aircraft are called aeronautical engineers, while those who focus on spacecraft are called astronautical engineers.

Agricultural and biological engineers : Combine their expertise in engineering technologies and biological sciences to develop agricultural machinery and structures. They create new ways to use agricultural byproducts and natural resources.

Biomedical engineers :Find creative solutions to medical and health-related problems, design devices for medical procedures.

Chemical engineers : Combine engineering and chemistry principles to study the production and uses of chemicals in a wide range.

civil engineering : Designs roads, bridges, buildings

Industrial engineers : Involved in designing production processes and factory-floor layout schemes.

Marine and ocean engineers : Design, build and maintain ships, aircraft carriers, submarines, tankers, tugboats and other large waterborne vehicles.

Mechanical engineers : Design tools, engines, electrical generators, internal combustion engines, elevators -- in short, any device that is mechanical in nature.

Mining engineers : Involved in  locating, extracting and processing coal, metals and minerals so that those materials can be used by manufacturers and utility companies.

Nuclear engineers : Determine the processes, instruments and systems necessary to tap into nuclear energy and radiation.

Petroleum engineers : Figure out new sources of oil and natural gas.