Lead Full Stack Developer (React / Node.js)

Job Title: Lead Full Stack Developer (React / Node.js) Job Description We're Keystone AI . The intelligent transformation partner. Solution-focused. Tech-powered. Intelligence-fueled. The global technology and services leader that powers the world’s best brands, today and into the future. We’re solution-focused, tech-powered, intelligence-fueled. With unique data and insights, deep industry expertise, and advanced technology solutions, we’re the intelligent transformation partner that powers a world that works, helping companies become refreshingly simple to work, interact, and transact with. We shape new game-changing careers in over 70 countries, attracting the best talent. The Keystone AI Technical Products and Services team is the driving force behind Keystone AI ’s transformation, data, and technology services. We integrate world-class digital engineering, creativity, and a deep understanding of human behavior to find and unlock value through tech-powered and intelligence-fueled experiences. We combine human-centered design, powerful data, and strong tech to accelerate transformation at scale. You will be surrounded by the best in the world providing market leading technology and insights to modernize and simplify the customer experience. Within our professional services team, you will deliver strategic consulting, design, advisory services, market research, and contact center analytics that deliver insights to improve outcomes and value for our clients. Hence achieving our vision. Our game-changers around the world have devoted their careers to ensuring every relationship is exceptional. And we’re proud to be recognized with awards such as "World's Best Workplaces," “Best Companies for Career Growth,” and “Best Company Culture,” year after year. Join us and be part of this journey towards greater opportunities and brighter futures. Title: Lead Full stack Web Developer (Reactjs + Node.JS) Location: Remote role in USA This role is open to candidates based in the United States and offers remote work flexibility, with availability required during Mountain Time business hours. As a hands-on technical leader, you will drive the architecture, design, and delivery of modern web applications for a fast-growing restaurant technology business, while actively coding, mentoring engineers, and partnering with cross-functional teams to build scalable, high-performance solutions. Responsibilities Lead the architecture, design, and development of enterprise-scale web applications using React, Node.js, and Express.js Define frontend architecture and establish best practices for reusable, accessible, scalable, and high-performing React applications Build and maintain responsive, modern user interfaces using React, TypeScript, Hooks, and component-driven design Design and support backend APIs for online ordering, menu management, loyalty programs, customer accounts, payments, POS, and third-party integrations Collaborate with Product Managers, UX/UI Designers, QA, DevOps, and business stakeholders to translate requirements into technical solutions Contribute hands-on code, review pull requests, troubleshoot complex issues, and support production environments Mentor and guide developers through code reviews, technical coaching, and engineering best practices Support the full software development lifecycle, including planning, estimation, development, testing, deployment, and production support Partner with DevOps on CI/CD pipelines, cloud deployments, and release planning Identify technical risks, manage technical debt, and provide daily, weekly, or monthly client updates as needed Qualifications 10+ years of professional software development experience 5+ years of hands-on experience with React, JavaScript, and TypeScript 3+ years of backend development experience with Node.js and Express.js 3+ years of technical leadership and mentoring experience 2+ years of experience with Microsoft Azure and cloud-based deployments Strong expertise in React architecture, state management, accessibility, performance optimization, responsive design, and component reusability Experience building and consuming RESTful APIs, secure authentication and authorization flows, and scalable backend integrations Proven experience with CI/CD pipelines, Git, Agile delivery, and collaborative development workflows Strong understanding of secure software development, networking, troubleshooting, and code quality practices Excellent communication, stakeholder management, and client-facing consulting skills Preferred Skills Experience with Next.js, React Query (TanStack Query), Storybook, Jest, React Testing Library, Playwright, or Cypress Familiarity with Redux or similar state management libraries Experience with HTML5, CSS3, LESS, SASS, responsive design, and mobile-first development Knowledge of Atomic Design, headless architecture, server-side rendering, SEO optimization, and WCAG accessibility standards Experience with Azure Cloud Functions, Azure D