With over three years of experience, I am a seasoned professional in the field of web and mobile app development. My expertise lies in working with a range of technologies, including MERN (MongoDB, Express.js, React.js, Node.js), Ruby on Rails (RoR), React Native, and GraphQL. Throughout my career, I have successfully developed numerous full-stack web and mobile applications, leveraging these technologies to deliver high-quality and efficient solutions. In the MERN stack, I am well-versed in utilizing MongoDB for database management, Express.js for creating robust web applications, React.js for building interactive user interfaces, and Node.js for scalable server-side development. This combination allows me to create feature-rich and responsive applications that meet client requirements. Furthermore, I have extensive experience with Ruby on Rails, a popular framework known for its simplicity and productivity. Using RoR, I have developed efficient server-side applications, leveraging the framework's conventions and libraries to accelerate development and deliver robust solutions. I am also proficient in developing cross-platform mobile applications using React Native, an open-source framework backed by Facebook. This allows me to build native-like apps for both iOS and Android platforms, saving time and effort in the development process. Additionally, I have a strong command of GraphQL, a query language for APIs that enables efficient data fetching and manipulation. I have leveraged GraphQL to build APIs that offer flexible and precise data retrieval, ensuring optimized performance and enhanced user experience. In summary, my diverse skill set and experience in MERN, RoR, React Native, and GraphQL make me a valuable asset for any project requiring full-stack web or mobile app development. I am confident in my ability to deliver innovative and scalable solutions while adhering to industry best practices.