Kotlin Backend Developer (Spring Boot)

4.588 hours4K learnersCertificate
Dive into Kotlin backend and build web applications with Spring Boot. Develop server-side apps, keep the data persistent, and test the app's functionality using modern tools.
Provided byLogo of the provider JetBrains Academy
See course content4 weeks ago last updated
No credit card required

Our students are building their future at:

Study at your own pace
Fit learning around your schedule. Suitable for all levels.
Learn from the experts
Short, practical text lessons by seasoned developers.
Become job-ready
Integrated with professional tools by JetBrains.
Join the community
Trusted by learners worldwide, confirmed by Trustpilot

What you'll learn

The course covers Kotlin fundamentals, basic algorithms, and all the must-haves for building a runnable web application with the Spring Boot framework. With our educational projects, you'll get the experience of working with modern tools and OS internals step by step. Here are some of the things you’ll do:

  • learn basic Kotlin syntax;
  • get familiar with object-oriented programming;
  • handle generics and collections;
  • discover how to persist data;
  • secure your app with authentication and authorization;
  • create web applications using Spring Boot;
  • master the basics of HTML, CSS, and JavaScript programming;
  • grasp the basic algorithms that will help you solve different tasks;
  • work with Gradle, IDE, the command line, Git, and much more;
  • find out how to interact with team members working on the same project.

Course program

View all 46 sections

This course includes:

1200+
Choice problems
900+
Coding problems
300
Theoretical articles
17
Projects to choose from
Certificate of completion
See course content

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.

Cinema Room REST Service (Kotlin)

Always wanted to have your private movie theater and screen only the movies you like? You can buy a fancy projector and set it up in a garage, but how can you sell tickets? Having a booth is old-fashioned, so let's create a special service for that! Make good use of Spring and write a REST service that can show the available seats, sell and refund tickets, and display the statistics of your venue. Pass me the popcorn, please!

Graduate

Web Quiz Engine (Kotlin)

In the Internet, you can often find sites where you need to answer some questions. It can be educational sites, sites with psychological tests, job search services, or just entertaining sites like web quests. The common thing for them is the ability to answer questions (or quizzes) and then see some results. In this project, you will develop a multi-users web service for creating and solving quizzes.

Graduate

Account Service (Kotlin)

Companies send out payrolls to employees using corporate mail. This solution has certain disadvantages related to security and usability. In this project, put on a robe of such an employee. As you're familiar with Kotlin and Spring Framework, you've suggested an idea of sending payrolls to the employee's account on the corporate website. The management has approved your idea, but it will be you who will implement this project. You've decided to start by developing the API structure, then define the role model, implement the business logic, and, of course, ensure the security of the service.

Graduate

Explore all projects

Learn from the industry experts

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

Geovanny Mendoza avatar
Geovanny Mendoza
3 weeks ago
I’ve been working day-to-day with Java and Kotlin on real microservices (Spring Boot, Spring Security—the whole package), so I came into this course with a strong foundation. Even so, I found it to be a well-structured track for anyone who wants to go from “I know Kotlin” to “I know how to build a s ...
Lone marner mortensen avatar
Lone marner mortensen
3 weeks ago
Covered a lot of relevant topics. However, there were a few test-question with errors.
Ivan Zykov avatar
Ivan Zykov
3 months ago
Very good course to learn basic and intermediate topics of Spring Boot

Join a community of 700 000+ passionate learners

Discussion feed

Ask questions, interact with the community and learn together with others.

Study groups

View solutions posted by other learners and learn from them.

Networking

Connect, share insights, collaborate on projects, and advance your career.
See course content

Show off your accomplishments

Add it to your resume or LinkedIn profile to increase your chances of getting noticed by recruiters.
Course provided by JetBrains Academy
Donald Knuthhas successfully completed the courseKotlin Backend Developer (Spring Boot)
Issue date August 20, 2026
300 topics completed

Select the plan that suits your learning goals

View plans