Proficient 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
Note: Every front-end developer is expected to have a proficient knowledge of JavaScript, while most front-end developers should know jQuery.
Good understanding of {{Depending on the specific case, a developer should have the knowledge of advanced JavaScript libraries and frameworks, such as AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc.}} 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.