Is there experience with Kotlin?

Yes, I have experience working with Kotlin. I have used it for developing server applications and Android apps.

Kotlin attracts with its concise syntax, type safety, and full compatibility with Java. For example, thanks to its null safety system, it can significantly reduce errors related to NullPointerException.

An example of a Kotlin function:

fun greet(name: String?): String {
    return "Hello, ${name ?: "Guest"}!"
}

Kotlin also supports coroutines for convenient asynchronous programming, which simplifies writing non-blocking operations.

Overall, Kotlin allows writing cleaner and more expressive code compared to Java, while maintaining the full power of JVM.