Candidate should also have experience in SVG/graphics frameworks such as Raphael.js, D3.js, ProtoV.is.
Candidate should also have solid understanding of Real Time web design principles using technologies like Node.JS and Socket.IO Websocket API.
Experience in Bootstrap.js, LESS or equivalent CSS frameworks is a huge plus.
It is highly desirable that the candidate has a knack for elegant UX design.
Ideal candidate should have solid OO foundation and a good understanding of designing easily usable APIs for application developers.
Major contributors to open source initiatives are welcome.