A designer is a person who makes designs for objects. A fashion designer designs clothing, a web designer designs web pages and an automobile designer designs automobiles. In each case, the designer works with the help of a technician or engineer who understands deeper level concepts of manufacturing and engineering and the designer themself is largely confined to work at a surface level.
More formally, a designer is an agent that "specifies the structural properties of a design object". In practice, anyone who creates tangible or intangible objects, products, processes, laws, games, graphics, services, and experiences is referred to as a designer.
Designs motion picture or television production sets, signs, props, or scenic effects. Prepares scale drawings for use in construction, modification, or alteration. May require an associate's degree or its equivalent and 2-4 years of experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks. Typically reports to a supervisor/manager. A wide degree of creativity and latitude is expected.