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Title: User Experience Design Principal Location: Redwood City, CA - Hybrid (2 days on-site/3 days remote) Duration: 12 Months W2 Preferred (No Sponsorship Required) Job Responsibilities: Work closely with our internal teams to translate design concepts and wireframes into responsive and performant React.js applications. Architect, build, and maintain modular and reusable components that reflect the pinnacle of coding excellence and adhere to best practices. Hands-on design and development of single page application using TDD (Test Driven Development) and DDD (Domain-Driven Design) models and high-level proficiency in OO-JavaScript. Influence UX designers to get optimal and incremental designs keeping short sprints in consideration. Accountable for unit and automation tests with Cypress framework, build and deploy one or more modules using GitHub Actions in a DevOps environment. Familiar with Single Page Applications (SPA), Mono-repo, Micro-Frontend Development (MFE). Ability to deal with ambiguity and break down complex features into comprehensive smaller development tasks. Responsible for troubleshooting and fixing production issues in quick turnaround time. Work with the team for constant improvement of system performance and scale using system profiling tools and stress testing techniques. Qualifications: 4+ years of proven experience as a React.js Developer, showcasing your expertise through successful project delivery. Advanced proficiency in React.js, React-router, Babel, NPM, Webpack, etc., and their core principles, including state management, functional components, hooks, and virtual DOM manipulation. Strong knowledge of Typescript, Jest, and Cypress. Ability to identify and rectify performance bottlenecks, ensuring an unparalleled user experience. Strong command of HTML5, CSS3, and JavaScript (ES6+), along with modern frontend build tools and workflows. Familiarity with RESTful APIs, GraphQL, or similar data communication protocols. Must have good knowledge of Agile/Scrum, continuous integration, and deployment. Working knowledge of CSS pre-processors like SASS/LESS. Flow/Typescript, Storybook is a bonus. Good understanding of advanced CSS3 concepts including Flex and CSS Grid and usage in large-scale enterprise applications. Good understanding of integrating with REST APIs and ensuring the quality of APIs by reporting bugs (if any) during integration. Nice to have strong skills in enterprise Java technology stack including Java, Spring, Maven, and JUnit. #J-18808-Ljbffr