Courses
I put a lot of heart and effort into creating valuable courses and learning materials.
Below you can find a list of my courses, as well as free mini-courses focues on a particular topic:
Learn everything you need to know to create backends using Kotlin and Ktor.
- +15h video content | 120 lessons
Learn Kotlin in a clear, step-by-step way.
Become a sought-after Kotlin professional with structured lessons, engaging exercises, and expert support.
- 64 Lessons
This free course is everything you need to know to authenticate and authorize users, assign and verify roles, generate JWT access tokens, and implement a JWT refresh token flow.
- 15 Lessons
Pssst...
Would you like to see what other people think of my materials across different platforms? 🙂
Take a look at testimonials:
This is the best course on the web about KTor. It has a lot of good information with practical and concise content. I am super excited about the new content in the future.
I am learning Kotlin and needed to implement security in an API, your course helped me a lot and I have learned a little more about Kotlin along the way, Thank you very much for your contribution.
HIGH QUALITY TUTORIAL!!!! This is the one that you were looking for. Codersee explains how to properly create the retrofit client, takes you through simple methods slowly building up the complexity and in the end adds interceptors for logging and mutating the request. I have been looking for a good tutorial on retrofit on the web for a couple of last days. THIS ONE IS GREAT! Polish engineers never disappoint. In one hour I got more done than in a day with other tutorials. GOOD JOB! 😀
I found out about this course through the developer community, and it has been an excellent experience. The course is well-structured, covering everything from the basics of Ktor to advanced implementations with databases, WebSockets, and authentication. I particularly enjoyed the practical approach, where each module builds on the previous one, allowing me to apply my knowledge immediately. Unlike other courses, this one provides real-world challenges and hands-on projects, making learning more engaging and effective.
This course fully describes the process of implementing authentication and authorization feature using RESTful API and Spring Security which is why I highly recommend it if you're new to Kotlin and/or RESTful apps development. I'm really surprised it is 100% free to take. Overall I'd say it's a great piece of educational material to improve your skill stack.
I bought his Ktor-Backend Course last week. It's soo amazing. There is no comparable product at this level out there. Fact ... and it's super cheap. The early bird version has only cost me 29 euros. Others would charge 299 euros for such a course. Props to u Codersee. Keep up the good work!
