User interface design or user interface engineering is the design of user interfaces for machines and software, such as computers, home appliances, mobile devices, and other electronic devices, with the focus on maximizing usability and the user experience.
There is a broad stream of design disciplines and it is not limited to graphic design. When someone says “I’m a designer“, it’s not immediately clear what they actually do day in and day out. There are several pillars of responsibility that together keep the design straightforward.