A global digital research & strategy agency working with some of the worlds biggest brands is looking for an experienced Front End Developer, JavaScript experts required.   The following skills are required:- Expert proficiency in HTML/CSS/Javascript/jQuery- D3.js, FusionCharts and other charting libraries  - HTML 5, CSS, JavaScript, Angular.js and other scripting frameworks- jenkins, grunt, GIT- CSS, and css preprocessors SASS or LESS - VCS and other general development tools/methods is expected.- RESTful API's- Proven experience with rapid, iterative low and high-fidelity prototyping.- Good communication, analytical skill set and experience of the full project life cycle.- Assisting in technical documentation, design, development and testing.  Beneficial:- Python or PHP  More Information: The front-end developer will be responsible for creating application interfaces, interactive data visualisations, design patterns and interactive prototypes. They will bring a creatively minded and aesthetically motivated approach to complement the accomplished back-end development team. Regular responsibilities will include;Lead front-end developer status on the user interface development, usability enhancement, extension, refactoring and maintenance of our unique toolset, MavensKit, as well as varied client-project initiatives.New product development, including MavensKit additions.Exploration, assessment, validation and development of data visualisation technologies.  The ability to invent, where opportunities are identified.High performance reporting dashboard design / development.Prototyping and design pattern development Although this is a development role rather than a design role, you will have an innate feel for exquisite interaction and interface design, coupled with comprehensive knowledge of front-end web development technologies and an insatiable curiosity. You will be able to demonstrate considerable experience of developing and delivering beautiful interactive web applications and demonstrate the following skills and experiences: