Hey Berlin Kotliners!
There will be amazing event next Saturday - Global Day of Coderetreat:
https://www.eventbrite.com/e/global-day-of-coderetreat-2017-softwerkskammer-berlin-tickets-39627587180?ref=eios&aff=eios
It would be nice to have more Kotlin enthusiasts there.
The event is about solving the same problem 6 times from scratch all the while applying different challenging restrictions.
You are going to improve your tdd and pair-programming skills, as well as software design, refactoring, command of IDE, etc. Moreover, you'll get the chance to teach others, as well.