Learning Kotlin

A beginner's guide to a modern programming language

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Language features

null safety, extensions, lambdas, Java interoperability and more

Backend development

With Ktor, spring and node.js

Frontend development

Compose multiplatform, Kotlin/JS, Kotlin/WASM and JVM frameworks

Cross-platform development

With KMP and Compose multiplatform

Advanced Kotlin

Coroutines, delegates, Function literal with receiver, DSLs and more

Practical exercises and solutions

All chapters have a set of exercises

Welcome

Who we are

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We design payments technology that powers the growth of millions of businesses around the world. Engineering the next frontiers in payments technology

Leader in payment and secured transactions
Over 50 billion transactions/year
7000+ engineers in over 40 countries
A huge & diverse tech-stack

Tips

This training is also available in French / Cette formation est aussi disponible en Français

Prerequisites

Basic knowledge of object-oriented language like Java
Prepare your development environment and install stuff before the session (see Tooling section)