The Lead ReactJS developer will lead a team, design and implement scalable web applications using React.js, Next.js, and TypeScript, mentor team members, set technical direction, and ensure delivery of high-quality code. This role requires experience in leading a team, front-end development, code quality, problem-solving, collaboration, performance optimization, technical strategy, code reviews, and stakeholder communication. The responsibilities include leading the team, front-end development, ensuring code quality and best practices, problem-solving, collaboration with other teams, optimizing applications, and technical strategy.