Senior React Developer

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CGI is seeking a highly skilled Senior React Developer to join our consulting team and support a client‑facing digital initiative. This is a hands‑on role focused on building high‑quality, reusable, and performant user interfaces using React, while collaborating closely with frontend architects, backend engineers, and UX teams.

This role is located on client site in Denver, CO area (Centennial, CO).

CGI Federal anticipates accepting applications for this position through .

• Develop and maintain reusable, performant UI components using React
• Implement responsive, accessible user interfaces aligned with design standards
• Collaborate with frontend architects to implement defined architecture patterns and best practices
• Integrate frontend components with back‑end APIs and services
• Participate in code reviews, sprint planning, and agile ceremonies
• Optimize applications for performance, scalability, and maintainability
• Troubleshoot and resolve frontend defects and performance issues
• Contribute to technical documentation and knowledge sharing

• 6–7+ years of hands‑on React development experience
• Strong proficiency in JavaScript (ES6+), HTML, and CSS
• Experience building component‑based architectures and shared UI libraries
• Experience integrating frontend applications with RESTful and/or Graph
  
  QL APIs
• Solid understanding of state management (e.g., Redux, Context API, or equivalent)
• Experience with modern frontend tooling and workflows
• Strong attention to detail and commitment to code quality

• Experience with Type Script
• Familiarity with SSR frameworks (e.g., Next.js)
• Experience working in micro‑frontend or modular frontend architecture
• Knowledge of accessibility (WCAG) and frontend performance optimization
• Prior experience in consulting or client‑facing roles

CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. A reasonable estimate of the current range for this role in the U.S. is $98,500.00 – $.

CGI's benefits are offered to eligible professionals on their first day of employment to include:

• Competitive compensation
• Comprehensive insurance options
• Matching contributions through the 401(k) plan and the share purchase plan
• Paid time off for vacation, holidays, and sick time
• Paid parental leave
• Learning opportunities and tuition assistance
• Wellness and Well‑being programs

Entry level

Full‑time

Engineering and Information Technology

Industries: IT Services and IT Consulting

Qualified applicants will receive consideration for employment without regard to race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.

CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at US_
. You will need to reference the Position  the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position  not be returned.

All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of U.S. government security clearance held.…