Kotlin app development

SJ Technologies is a UK IT agency. Kotlin is how we write native Android unless the brief says otherwise. We use it for the app, the shared domain, and the tests. Kotlin Multiplatform only where sharing code with iOS is the honest trade-off, not as a fashion. If Swift on iOS and Kotlin on Android is cleaner, we say so.

• Kotlin as the default language for native Android.
• Shared Kotlin only where iOS can live with the same domain code.
• Tests and reviews in the same language as the product.
• Named engineers, and source that remains yours.