iOS and Android developer

We are looking for a software developer with experience in mobile app development (iOS and Android) and related server-side applications. 

Requirements: 

• Experience in user interface design
• XML/JSON
• Languages: Java, Kotlin Swift 
• Databases: Php/MySQL, MongoDB, SQLite Database
• Android UI / Android SDK
• Android studio, Firebase
• Android testing: Expresso, Junit, Mockito
• Apple's Xcode IDE
• GitHub or other software version control
• English - B2