CodeNinja is seeking a Senior React JS Engineer to join their Professional Services team. This role focuses on building and maintaining sophisticated web applications using React.js and modern frontend technologies. The ideal candidate will have extensive experience in frontend architecture, component-based development, and the React ecosystem. You'll be responsible for creating responsive, performant applications while ensuring security and maintainability. Working from either Lahore or Karachi office, you'll collaborate with teams to deliver high-quality frontend solutions. This position offers the opportunity to work on challenging projects while implementing best practices in frontend development, state management, and testing. The role requires a strong technical background combined with excellent problem-solving and communication skills, making it perfect for experienced React developers looking to take on senior-level responsibilities in a professional services environment.