It is essential to the success of a tech start-up to know when to use a designer, especially when creating a product. The role of a graphic designer is to create the aesthetics of a website; this is key to branding and content marketing. The UX designer works behind the scenes of the visual design, they ensure that the software is effortless. The role of both a Graphic designer and UX designer is essential in creating a custom mobile application and many other tech products. Check out this article, it does a great job of breaking down the role of each designer and when they are appropriate to use.