Job Summary:
FullStack is one of the fastest-growing software consultancy companies in the Americas, focused on delivering transformational digital solutions to top global companies. They are seeking a Principal React Engineer to integrate with client teams or work on FullStack product teams, building and delivering complex frontend applications using React.
Responsibilities:
• Integrate yourself directly into our client's team and work alongside their existing designers and engineers on a daily basis.
• Work on a FullStack product team to build and deliver a product to our clients.
Qualifications:
Required:
• 10+ years of professional software development experience.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Extensive experience building complex frontend applications using React.
• Deep experience in JavaScript and TypeScript for large-scale application development.
• Proven experience designing scalable frontend architectures and design systems.
• Strong background in performance optimization, state management, and modern frontend patterns.
• Demonstrated experience leading technical decisions and mentoring engineering teams.
• Hands-on experience working with APIs and integrating frontend applications with backend services.
• Practical experience implementing responsive design and cross-browser compatibility.
• Solid understanding of frontend testing frameworks and best practices.
• Familiar with CI/CD pipelines and modern DevOps practices for frontend delivery.
• Knowledgeable in accessibility and user experience best practices.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Forensic attention to detail.
• A positive mindset and a can-do attitude.
• Experience working on Agile / Scrum teams.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
• Ability to identify with the goals of FullStack's clients, and dedicate yourself to delivering on the commitments you and your team make to them.
• Ability to consistently work 40 hours per week.
Preferred:
• We’re Seeking Engineers Who Are AI-enthusiastic In Their Workflow. Professional Experience Or Personal Project Work With The Following Is a Significant Plus
• Cursor, Windsurf, or Google Antigravity.
• Claude Code, Gemini CLI, Codex, or Copilot CLI.
Company:
FullStack is a leading software engineering and AI solutions company helping organizations modernize, innovate, and scale through intelligent technology and world-class AI-ready talent across the Americas. Founded in 2013, the company is headquartered in Brentwood, Tennessee, US, , with a team of 501-1000 employees. The company is currently Late Stage.