Candidate should know about these technologies - "Hand on Experience with React JS (Full Stack) Hand on experience with React.js (Fullstack) Good understanding of Node.js frameworks (Express, Koa, Sails, Hapi) and good handson experience in at least one,Core JS Concepts including ability to write unit tests,ES6 + Javascript.Experience in API Design (REST concepts) and API modelling, Websockets(Socket IO). Experience with build tools (Webpack),NoSql Databases(Mongo, Dynamo)."