A React Native Developer specializes in building mobile applications using React Native, a popular open-source framework for developing cross-platform apps for iOS and Android. They are skilled in JavaScript and React, using these technologies to create high-performance, responsive, and native-like user experiences. React Native Developers build reusable components, integrate APIs, and optimize mobile app performance. They work closely with designers and backend developers to deliver apps that are both functionally rich and visually appealing, while ensuring seamless functionality across different mobile platforms.