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Business & technical insights about Kotlin in one publication.

No matter if you:

  • want to develop your first project in Kotlin or intend to use the advantages of this language in your business,
  • are looking for technical advice or are interested in a business background,
  • know Kotlin from the inside out or you are just considering entering a new technology.

You are in the best place!


The one&only publication about Kotlin.

As Kotlin Crew, we have prepared a unique publication. We offer you a book that will grow together with you and our Community. It’s like a never-ending source of knowledge and inspiration, and it’s all about Kotlin.


All about Kotlin

Sign up for the waiting list

to make sure to get this book first and have access to all updates.  This is a lifetime opportunity to receive a high  dose of knowledge and inspiration for free.
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What can you expect?

Check out why it’s worth signing up for the book waiting list.
Kotlin overview

Are you just starting your adventure with programming in Kotlin? Are you considering using Kotlin in the MVP of your new product? Or maybe you would like to develop new features of your working solution in new technology? We guarantee you will find something interesting in our book at every stage of your adventure with Kotlin.

Business insights

What projects is Kotlin best suited to? When should you consider switching from other programming languages to Kotlin to keep your project ahead of the competition? Will it work for every application? What do practitioners who successfully build their products based on Kotlin think about this technology, and what advice do they have for others? If you want to gain high-level knowledge about this programming language, sign up for the waiting list.

Technical tips & tricks

Would you like to know if Kotlin and Gradle are a perfect match? Do you know how to hide sensitive data in logs? Are you interested in custom metrics with Micrometer and Prometheus using Kotlin? We asked Kotlin developers to share their experience and knowledge.

Real-life use cases

Check the lessons learned from Kotlin practitioners and learn where you can use Kotlin to benefit your business and deliver extraordinary values to your customers. No matter what industry you’re in, you’re sure to find interesting tips.

Regular updates

We want this book to grow together with our Community. That is why you can be sure that every few months you will receive a refreshed position with insights from experts, practitioners, users and developers, whose experience you will be able to use in your own project.

Be the first one to get the book just in..


Get the book

Leave your e-mail and be the first one to receive our newest publication for free!

    Check out our other materials while waiting for the book.

    We aim to provide a dynamic and welcoming environment for Kotlin developers and users of all levels to exchange ideas, ask questions, and discover new possibilities.

    If you’re seeking real-world Kotlin use cases, insights into language features, and integrations with other technologies, have a seat because you’ve come to the correct spot.


    Kotlin Crew Community Talks.

    Is Kotlin here to stay? What does it take to be a good Kotlin developer and how to find one for your team? Check all episodes of Kotlin Crew Community Talks, where our Senior Communications Manager Monika Dawidowicz gets to know people and companies using Kotlin to build the next big thing in the tech world. We discuss everything connected to one of the most trending programming languages in the ecosystem. Is the Kotlin hype just temporary, or is it here to stay and possibly even replace other technologies?

    Listen to a conversation with Jacek Matacz, who is sharing some tips on recruiting the right Kotlin developers and how to improve your skills if you are looking for a job as one, or check the episode with Krzysztof Radecki, our CTO at, to find the answer to the question: is Kotlin here to stay?

    Check all videos on our YT channel.

    Justyna Pelc
    Justyna Pelc Head of Community

    Let’s join this publication
    as an expert!

    If you’d like to be a part of this project, just schedule a call and let’s check what we can do together.
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