Develop current user-facing features Build reusable code and libraries for future use Ensure the technical feasibility of UI UX designs as per domain standards Optimize application for maximum speed and scalability Assure that all user input is validated before submitting to back-end Collaborate with other team members and stakeholders SkillsProficient understanding of web markup including HTML5 CSS3 Basic understanding of server-side CSS pre-processing platforms such as LESS and SASS Proficient understanding of client-side scripting and JavaScript frameworks including jQuery Good understanding of advanced JavaScript libraries and frameworks Good understanding of asynchronous request handling partial page updates and AJAX Basic knowledge of image authoring tools to be able to crop resize or perform small adjustments on an image Familiarity with tools such as as Gimp or Photoshop is a plus Proficient understanding of cross-browser compatibility issues and ways to work around them Proficient understanding of code versioning tools such as GIT GIT HUB Good understanding of SEO principles and ensuring that application will adhere to them