Engineers also work in maintenance, production, or testing. They test products for quality control and supervise production units. Today, however, many engineers opt for engineering management or sales where their engineering background facilitates the marketing process and installation planning. Some engineers design industrial machinery and equipment, while others may be involved in consumer goods, electrical, electronic equipment or construction of highways, buildings, dams and bridges. Engineers in defence design equipment and weapon systems, while a bio-medical engineer works to apply engineering techniques for the manufacture of medical equipment.
Engineers consider many factors when developing a new product.
This process applies to many different products, such as chemicals, computers, gas turbines, helicopters, and toys. In addition to design and development, many engineers work in testing, production, or maintenance. These engineers supervise production in factories, determine the cause of breakdowns, and test manufactured products to maintain quality. They also estimate the time and cost to complete projects. Some work in engineering management or in sales, where an engineering background enables them to discuss technical aspects and assist in product planning, installation, and use.