Responsibilities & Duties Designing, developing, and testing UI for mobile and web applications Build reusable code and libraries for future use Accurately translate user and business needs into functional frontend code Ensure the technical feasibility of UI/UX designs Optimize application for maximum speed and scalability Skills Good understanding of Twitter Bootstrap and use of design tools Experience building object oriented web applications in JavaScript, HTML, and CSS Proficient understanding of cross-browser compatibility issues Proficient understanding of code versioning tools, such as Git, SVN Good understanding of SEO principles