 Total Experience: 7-8+ years

 Experience with version control systems and collaborating on common code base in a 

Continuous Integration environment

 HTML5, especially semantic structure of the DOM

 CSS3 and preprocessors such as SASS or LESS

 JavaScript functional programming (as opposed to imperative-style)

 JavaScript events (event loop and callbacks)

 Client-Side MVC frameworks (Backbone/Marionette, Ember, Angular)

 JavaScript libraries (jQuery, Underscore)

 NodeJS (for development and build environment tools, not for server-side JS in production - e.g. 

Grunt, Gulp, Shifter, Broccoli, Select, etc.)

 JavaScript templating (Mustache, Handlebars, Jade, Soy, etc.)

 Module design pattern

 Dependency injection/inversion of control

 Separation of concerns

 Responsive Web design

 JavaScript closures

 Web accessibility (WAI/ARIA)

 Front-end developer tools, especially JavaScript debuggers

 Optimization techniques for front-end performance

 JSON and Ajax for RESTful Web services

 Single-Page Apps or flows

 Simulators and toolkits for Mobile Web App development (Xcode tools, Android SDK, 

DeviceEverywhere, etc.)

 Understanding of the differences, strengths, and weaknesses of the different browsers and 

platforms

 Code/content separation and resource bundles

 Internationalization/localization

 Unix shell scripting and command-line interface