To thrive as a Senior Facebook Front End Developer, you need advanced proficiency in JavaScript, React.js, HTML/CSS, and a strong foundation in computer science, often supported by a relevant degree and years of experience. Expertise with development tools like Git, testing frameworks, and Facebook’s internal systems such as Relay and GraphQL is often required. Exceptional problem-solving, collaboration, and communication skills help you deliver scalable solutions and mentor junior developers. These skills ensure you can build high-quality, performant user interfaces at scale while driving innovation within dynamic engineering teams.