Good understanding of front-end technologies, including HTML5, CSS3, JavaScript, jQueryExperience building user interfaces for websites and/or web applicationsExperience designing and developing responsive design websitesComfortable working with debugging tools like Firebug, Chrome inspector, etc.Ability to understand CSS changes and their ramifications to ensure consistent style across platforms and browsersAbility to convert comprehensive layout and wireframes into working HTML pagesKnowledge of how to interact with RESTful APIs and formats (JSON, XML)Proficient understanding of code versioning tools such as Git, SVN, and MercurialStrong understanding of PHP back-end development