Job Title: Senior React Developer
Job Category: Software Development/ Engineering
Job Type: Contract to hire
Location: Centennial, Colorado, United States
No.Openings: 1
Description:
Senior React Developer
Position 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.
Your future duties and responsibilities
• 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
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Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives.
Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.