I would bet on Scala over Kotlin for the server side. Java is starting to incorporate Kotlin features so in a few years there won't be that much different. Kotl

I would bet on Scala over Kotlin for the server side. Java is starting to incorporate Kotlin features so in a few years there won't be that much different. Kotlin reminds me of Coffeescript. It was a much nicer javascript but then Javascript just incorported coffeescript features.