UX Design refers to User Experience Design while UI Design stands for User Interface Design. UI/UX designer is a person who is responsible for accomplishing, organizing and executing an interface that carry out company’s business goals. UX Designers combine their designs and graphic skills to understand and meet user needs. UI Developers combine both design sensibilities and technical skills together. Both elements are crucial to a product and work closely together but the roles are quite different referred to process and design.

User Interface Design is the part of the product that faces the user when he looks at the site while User experience is how they feel when they look at the site. User Experience Design is more diagnostic to technical field while User Interface refers to a graphic design.

User Experience (UX) Designer = Research + Design

UI Developer = Design + HTML/CSS/JS

A good User Interface Designer is always taking into consideration the UX of what they’re designing.