The primary responsibility of a Full Stack Developer includes designing user interactions on websites, developing servers and databases for website functionality and coding for mobile platforms. Particular responsibilities often include: ● Developing front end website architecture. ● Designing user interactions on web pages. ● Developing back end website applications. ● Creating servers and databases for functionality. ● Ensuring cross-platform optimization for mobile phones. ● Ensuring responsiveness of applications. ● Working alongside graphic designers for web design features. ● Seeing through a project from conception to finished product. ● Designing and developing APIs. ● Meeting both technical and consumer needs. ● Staying abreast of developments in web applications and programming languages.