Javascript Front End Developer - Hertfordshire/London - Urgent Start

Javascript Front End Developer/ UX Developer with HTML5, CSS3 and Javascript is required for an initial 3 month contract for a leading Digital Agency. The role will be primarily based in Welwyn Garden City (Hertfordshire) which is 20 mins from Kings Cross in London. This is working on a project for one of the agencies major clients. 

Responsibilities:

- Provide context and guidance for integration and implementation of Front End Interfaces
- Translate wireframes, comps, and functional requirements into functional HTML/CSS/JavaScript
- Develop standards compliant mark-up and code for web sites and applications
- HTML5
- CSS3
- Object Oriented JavaScript
- Develop according to and Industry best practices
- Search Engine Optimization
- Progressive Enhancement
- Accessibility (AA, Section 508)
- Cross Browser support and fixes
- W3C recommendations and best practices (and used validators)
- Execute component design patterns according to and Industry best practices
- Implement complex Ajax framework to facilitate data exchange and writes DOM manipulation scripts to use the data to be represented on the Front End.
- Develop JavaScript using standard Frameworks
- jQuery, Dojo, YahooUI, Zepto, Require, Modernizer, picturefill, FastClick, RequireOptimizer,  etc.
- Develop small to medium size custom JavaScript libraries for reuse across the application with:
- Error handling
- Namespacing
- Memory management