A Mobile Product Development developer designs and builds mobile applications. They understand user requirements, create app interfaces, and incorporate functionalities. They are proficient in programming languages like Swift for iOS or Java for Android. They work closely with UX/UI designers for design implementation and quality analysts for debugging. They also ensure the app's compatibility with different devices and versions, optimize its performance, and maintain its updates. Additionally, they adhere to the app store guidelines during the deployment process. They may also analyze user feedback and usage data to improve the app’s features and user experience.