I create, test & Program application software for operating system environments like iOS & Android and often take into account UI & UX principles when creating applications. i develop software for phones & tablets also i am familiar with the newest technologies in mobile world. I am also aware of how to deal with device fragmentation to achieve the best user experience(UX) results. Mobile development requires staying in the mobile head space, meaning that its even more important than with other hardware context to optimize the performance, battery, network & memory management. "Mobile app developer" is a very wide term because its not limited to developers who write native code for platforms like android * iOS. it can also include hybrid app developers working with frameworks such as cordova or ionic & javascript & c# developers, who are using react native & xamarine to write mobile apps. These are distinct specializations, so its crucial to either specify what technology you intend to use in the app or make it clear that you are open to technology propositions.