While you may be able to recognize and appreciate the work of graphic designers, fashion designers, and architects in your everyday life, you may not think too often about experience designers. But user experience (UX) designers have a huge impact on the products most of us use every day, especially digital products like smartphone apps and websites. A UX designer is in charge of how you interact with a product and the overall experience: What features does it offer? When you click a button on an app or website, where does it take you? Can you find that button? How many clicks should it take to put in your credit card information or sign up for a new account? How easy is it to figure out how to share a link or invite a friend? It’s a UX designer's job to figure that stuff out.
http://mentalfloss.com/article/560531/secrets-user-experience-designers/