Experienced developers will find a fully remote Senior Frontend Developer (React.js / Next.js) opportunity focused on architecting and building scalable web applications, driving frontend performance, and mentoring junior engineers. Key responsibilities Architect and build robust web applications using React.js and Next.js, overseeing significant features from design to rollout Drive frontend performance optimization, including server-side rendering and static generation, while collaborating with cross-functional teams Mentor mid-level and junior engineers, enhancing the team's overall frontend capabilities and raising quality standards through code reviews and best practices Required qualifications 5+ years of professional experience building production web applications with JavaScript and React.js Hands-on experience with Next.js, including server-side rendering and static generation Strong command of ES6+, TypeScript, HTML, CSS, and a state management library (Redux or similar) Proven experience in frontend performance optimization and debugging Experience with modern build tooling (Webpack, Babel, or equivalent) and frontend deployment pipelines