Kotlin, Firebase, Ios, Android, React Native, Flutter, Rest Apis, Swift, Subscriptions, in-app purchases, Ads, mobile build tools, code signing, Supabase

static code analysis , Ios Development, Unit Testing, Performance Tuning, Continuous Integration, Test Driven Development, Agile Development Methodologies, asynchronous programming patterns, Swift programming language, RESTful JSON services, Threading, security best practices, performance analytics tools for mobile applications, MVVM architecture