Introduction to Ktor

4.331 hours1K learnersCertificate
Step into the world of Kotlin and master backend development with our Ktor course. Learn the basics of Kotlin, web app fundamentals, and REST service development.
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What you'll learn

This course gives you hands-on experience developing professional-level web applications with Kotlin. You will take your coding skills in Kotlin to the next level by mastering Ktor, one of the most advanced Kotlin-based frameworks provided by JetBrains. Ktor's integration with the Kotlin language, scalability, extensibility, and excellent community support make it a powerful choice for developing modern web applications. This course is designed to equip you with everything you need to build responsive, effective, and reliable backend applications with Ktor.

 

With this course, you can learn and develop:

  • Basic syntax of Kotlin,
  • Object-oriented and functional programming with Kotlin,
  • The power of interoperability with Java,
  • Patterns and algorithms for making your app concise and coherent,
  • Microservice and backend architectures,
  • Web app fundamentals on the backend side,
  • Creating web applications using Ktor,
  • Developing and testing REST services,
  • Coding real-time apps with web sockets,
  • How to persist your data through SQL/NoSQL and Ktor,
  • Managing both client and server sides,
  • Manage dependency injection frameworks,
  • Configuring and logging your app.

 

Course program

View all 23 sections

This course includes:

520+
Choice problems
390+
Coding problems
130
Theoretical articles
6
Projects to choose from
Certificate of completion
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Learn by doing

# 1
Apply knowledge into practice
You already know the theory. Now it's time to code like you do at work—in a professional IDE, with real project constraints, solving problems that actually matter. Welcome to software engineering as it should be.
# 2
Navigate complexity with surgical precision
Most developers waste months learning random concepts without seeing how they connect. Our interactive Knowledge Map fixes this. It shows exactly how every programming concept relates to others, helping you build a structured mental model of coding.
# 3
Copy the best. Then improve.
Here's what top engineers do that others don't: they study other people's code obsessively. When you get stuck on Hyperskill, you can explore solutions published by other developers. See their exact code. Understand their approach. Learn their tricks.
# 4
Code review that actually makes you better
We stripped code review down to what actually matters: does your solution work? Have you handled the edge cases? Is there a cleaner way to write this? Hyperskill acts like a competent reviewer who actually tests your code. Not genius-level analysis, not architecture debates — just solid feedback on making your code better.

Elevate your engineering mastery through real-world challenges

Master advanced engineering concepts through ambitious projects. Each project deepens your expertise and transforms you from an experienced engineer into an exceptional one.

Tic-Tac-Toe Online

Let's play a classic game of tic-tac-toe! But why stop there? Join us in creating the ultimate multiplayer version where you can host or join waiting rooms, customize the map size, and play against other users. We'll focus on developing the game's backend, and you'll have the opportunity to create the client portion to interact with the game server. Let's get started!

Graduate

HotKitchen

Your friend decided to open a new restaurant, and you have agreed to help him. He wants to automate everything so customers can place an order from anywhere. Your friend asked you to write a RESTful API for his restaurant. In this project, you'll create an API to help you interact with the restaurant.

Graduate

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JetBrains Academy

JetBrains Academy

JetBrains Academy is a part of JetBrains, a global software company specializing in the creation of intelligent, productivity-enhancing tools for software developers and teams. With years of expertise in software development and education, JetBrains Academy empowers more than a million people worldwide to learn and teach computer science, and help organizations inspire their teams to reach their goals in tech. Professional development tools play a big role in computer science education. This is why JetBrains Academy courses offer integration with JetBrains IDEs. This integration assists learners in getting experience with real development processes to streamline their learning curve at future work.

Your peers think Hyperskill rocks

Paul de Mast avatar
Paul de Mast
3 years ago
HotKitchen is a very good educational, but challenging project:- learned to create a Ktor backend- learned to apply JWT authentication- learned to use Exposed for persistence- learned to use Exposed DSL for implementing some domain logic ...
John Test
3 years ago
I've learned what the internet is under the hood and how websites work!)

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Course provided by JetBrains Academy
I can exit vimhas successfully completed the courseIntroduction to Ktor
Issue date August 28, 2026
130 topics completed

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