Javascript / React Developer

Location: McLean, VA 3 Day on-site (Local candidate will get first preference) Description: Must Haves: Responsibilities: Technical Skills: Must have 7 years of experience in building large-scale web-based applications using JavaScript/TypeScript, HTML and CSS. Must have 4 years of strong hands on experience with ReactJS, Redux. Automated unit testing tools such as Jest, Enzyme, React-testing-library and end-to-end testing tools such as, WebDriver IO, Cypress, or other Selenium-based technologies. Develop highly responsive user-facing new features using React.js. Building reusable components and frontend libraries for future use. Understanding business requirements and translate them into intuitive user experiences. Working knowledge of design, mock-up, wireframe tools (Figma, Sketch, UX Pin, Adobe XD, etc.) Translating designs and wireframes into high quality code. Developing flexible and well-structured frontend architecture, along with the APIs to support it. Optimizing existing components for maximum performance. Constructing visualizations that can depict vast amounts of financial data. Manage self-directed assignments to implement features to meet schedule commitments with a high level of quality. 7 years of professional experience in building large-scale web-based applications using JavaScript/TypeScript, HTML and CSS. 4 years of strong hands on experience with ReactJS, Redux. Thorough understanding of React.js (JSX), Redux and its core principles. Strong proficiency in JavaScript, JavaScript object model, RESTful APIs, DOM, and the relevant concepts. Proficient understanding of Progress Web Applications (PWA), and Single Page Applications (SPA). Proficiency in front-end development using Vite.js or similar frameworks. Proficient understanding of the React build chain through Webpack/Rollup. Experience with popular modern UI libraries (Bootstrap, Material UI Components, AG grid etc.). Experience with Storybook (Directory of UI components) is a plus. Sufficient knowledge of NodeJS. Experience with modern frontend build pipelines and tools (e.g., dependency management using NPM, YARN, or BOWER). Experience with browser-based debugging, and error checking. Automated unit testing tools such as Jest, Enzyme, React-testing-library and end-to-end testing tools such as, WebDriver IO, Cypress, or other Selenium-based technologies. Experience with code versioning tools such as git. Great time-management, interpersonal and communication skills. Positive, can-do attitude and a Keen collaborator.