Job Description :
Lead Front End Developer Bolingbrook, IL Contract JD: More than 10+ years of overall experience Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model Thorough understanding of React.js and its core principles Experience with popular React.js workflows (such as Flux or Redux) Familiarity with newer specifications of ECMAScript Experience with data structure libraries (e.g., Immutable.js) Knowledge of isomorphic React is a plus Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools Experience with common front-end development tools such as Babel, Webpack, NPM, etc. Ability to understand business requirements and translate them into technical requirements A knack for benchmarking and optimization Familiarity with code versioning tools {{such as Git, SVN, and Mercurial}} Complete understanding of node.js and its framework. Node-based module loaders and task runners (Webpack, Gulp or Grunt), creating npm modules, Yeoman generators Experience with compile to JavaScript languages like TypeScript and/or CoffeeScript Experience with the Express.js framework Knowledge in CI/CD tools (Jenkins, Bamboo, VSTS, etc) Experience using Agile/Scrum process to develop software systems Experience with authentication (OAuth2, OpenID Connect, etc) and authorization of APIs and security best practices such as validation, etc Knowledge of Electrode framework will be huge plus Understanding what asynchronous programming is all about and its workarounds. Expert understanding of code versioning tools, such as Git Good knowledge of server-side CSS pre-processors Have good knowledge of: HTML, CSS, JavaScript, JQuery, MySQL, SQL Server, Git, JQuery UI, AJAX, JSON Hand on Experience in MongoDB Experience with Agile / SCRUM methodology for product development Proven ability and desire to deliver projects on time with high quality. Excellent verbal and written communication skills Experience working in SaaS environment