This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr. Frontend Engineer (React) based in the United States. This is an exciting opportunity for a senior frontend engineer to lead the technical direction of modern React applications powering enterprise-scale digital solutions. You will combine hands-on development with technical leadership, guiding distributed engineering teams while building scalable, accessible, and high-performance user interfaces. Working alongside architects, designers, and backend engineers, you will help shape frontend architecture, establish engineering best practices, and deliver production-ready features in an agile environment. This role offers the chance to influence product quality, mentor developers, and contribute to innovative AI-enabled software projects while working remotely with occasional client collaboration.