On Windows Phone, I was tasked with learning a proprietary language known as Splash. Developers would hand us Splash front end code that was visually messy, and as a design intergrator, it was our task to take the front end UI and polish it to final consumer levels. This had to be done 3 times for each screen, as there were 3 different resolutions. Below are before and after screenshots from Windows Phone 8.

What is a Design Developer? I am a UX designer who has learned to code, UI Developer, knows the platform I am working in like the back of my hand, can rapid prototype, works with developers and designers and speaks both languages, works on helping design land their vision, polishes the UI in production code, expert in accessability, UI, UX, and reflowing visuals, and can bridge the gap between professions to help make sure the product is at its highest quality. We are the superheros between the product and its users to make sure the user experience is at its best.