> Markdown version of [/jobs/ext/188826-senior-react-developer](https://www.wearedevelopers.com/jobs/ext/188826-senior-react-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior React Developer - **Company:** System One - **Location:** Greenwood Village, CO, United States - **Experience:** Expert - **Salary:** $353,600.0 - **Contract:** Temporary to permanent - **Skills:** JavaScript (Programming Language), Web Accessibility, Application Performance Management, Cloud Computing, Code Review, Data Security, Design of User Interfaces, Node.Js, Performance Tuning, Release Management, Next.js, Strategies of Testing, TypeScript, User Interface Testing, Web Content Accessibility Guidelines, Data Processing, ReactJS, Cypress (Programming Language), Backend, Webpack, AngularJS, Material UI, Optimization Algorithms, Graphql, Front End Software Development, React Redux, React Testing Library, Software Coding, Restful APIs, Api Management - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=45248cdf71e697e1 ## About the Role * Angular * Front End Development * Front-end Architecture, * 10+ years of front-end engineering experience, including significant production experience with React * Deep proficiency in TypeScript with strong understanding of scalable typing patterns and coding standards * Experience implementing enterprise UI design systems such as Material UI or similar frameworks * Working knowledge of Node.js, including development of shared packages or internal libraries * Hands-on experience implementing automated front-end testing strategies * Strong understanding of modern build tooling, module bundling, tree shaking, and performance optimization techniques * Experience with state management libraries such as Redux, Zustand, Recoil, or similar tools * Proven ability to improve application performance through lazy loading, code splitting, and bundle optimization * Experience integrating RESTful services and/or GraphQL APIs with efficient data handling strategies * Familiarity with CI/CD pipelines and release management practices for front-end deployments * Strong analytical and troubleshooting skills in complex client-side environments * Effective communication skills and ability to collaborate across product, design, backend engineering, and business teams Strongly Preferred * Experience with AEM Cloud and SPA Editor * Familiarity with server-side rendering frameworks such as Next.js * Experience working within micro-frontend or modular front-end architectures * Knowledge of accessibility standards (WCAG) and advanced front-end performance optimization techniques * Prior consulting or client-facing experience #M1 #DI-CB2 #M1 ## Description Senior React Developer to support a client-facing digital initiative in the Denver, CO area (Centennial). This role is located at the client site in Denver, CO area (Centennial, CO). Also, requires onsite presence Tuesday through Thursday each week This is a hands-on consulting role focused on designing and delivering high-quality, scalable, and performant front-end solutions using React and TypeScript. The ideal candidate brings deep front-end engineering expertise, strong architectural instincts, and the ability to collaborate closely with UX, backend engineering, and cross-functional stakeholders to deliver enterprise-grade digital applications., * Design and implement modular, high-quality front-end features using React and TypeScript * Establish and maintain scalable front-end architecture supporting long-term maintainability and growth * Develop reusable Node.js modules and shared libraries to drive cross-project consistency * Build intuitive, accessible user interfaces leveraging Material UI or comparable design systems * Integrate applications with RESTful and/or GraphQL APIs, optimizing data access and state management * Implement comprehensive UI testing strategies using Jest, Cypress, React Testing Library, or similar tools * Optimize build performance and bundle efficiency through modern tooling such as Webpack and related technologies * Ensure solutions meet enterprise standards for performance, accessibility, and security * Partner with backend engineers to define API contracts and improve data-fetching strategies * Troubleshoot complex UI, caching, and state management challenges * Contribute to technical design discussions, conduct code reviews, and mentor junior developers * Stay current with evolving front-end trends, frameworks, and best practices ## Related Videos - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [To New Frontiers: The Future of Frontend Development](https://www.wearedevelopers.com/videos/404-to-new-frontiers-the-future-of-frontend-development) - [From Zero to Hero: NextJS 13 and Tailwind CSS for Beginners](https://www.wearedevelopers.com/videos/766-from-zero-to-hero-nextjs-13-and-tailwind-css-for-beginners) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)