JBI Training's Kotlin courses provide a structured learning path for developers working with Kotlin for Android, backend and JVM-based applications. The range covers everything from core Kotlin programming through to advanced language features, professional development practices, asynchronous programming, testing and modern Android development.

The group includes Kotlin, Kotlin Beyond the Basics, Kotlin Best Practices, Kotlin for Testers, Kotlin Coroutines, Kotlin Mastery, Kotlin Expert, Android Development with Kotlin and Compose Essentials. This allows developers to choose training according to their current experience, role and development requirements.

Courses cover areas such as Kotlin syntax and fundamentals, object-oriented and functional programming, null safety, collections, generics, extension functions, Kotlin and Java interoperability, coroutines, idiomatic Kotlin, DSLs, testing and Android application development. Advanced courses explore topics including Kotlin's type system, reflection, performance, concurrency and expert-level language features.

Training is available through classroom and live online delivery, with customised onsite courses available for organisations.