New · AI Agent on every course
Learn from principal-level engineers, write real code in your browser, and pair with an AI agent when you get stuck. This is training for the job, not another video library.
the platform
You don't just watch. You build.
Every part of Dometrain is designed around doing the work: real code, real tests, real design decisions, and honest feedback at every step.
Expert-led courses
Recorded by principal-level engineers who build and run production systems. You get the technique, the trade-offs, and the scars behind it.
Browse the catalogHands-on exercises
Write real code against real test suites, right in your browser. No setup, no repo cloning, instant feedback on every run.
See Hands-On coursesAI Agent on every course
It edits your files and runs your tests on exercises, builds System Design diagrams, and on video lessons it searches the lecture, drives the player, and explains what’s on screen.
Meet the agentSystem design canvas
Design architectures block by block on an interactive canvas, with checks that know the lesson. The agent builds and reviews diagrams with you.
Explore System DesignAI mock interviews
A voice-based interviewer that adapts to your answers and scores you honestly when you hang up. Find the gaps here, not in the room that matters.
Try an interviewProgress you can prove
Certificates, streaks and progression stats. Soon on learning paths built by AI around your goals and your actual progress.
Preview AI learning pathsstart here
Featured courses
Hand-picked from the catalog, taken by thousands of engineers right now.
who trains here
You're in good company.
Software engineers at the biggest companies in the world use Dometrain to level up themselves and their teams.
75K+
engineers train on Dometrain
1,000+
companies upskill their teams here
99%+
of students are satisfied with their course
pricing
Start for free. Upgrade when you're ready.
Watch full free courses without paying a cent, then pick the plan that matches how far you want to go.
from the blog
Featured blogs
Deep dives and practical write-ups from the engineers behind the courses.
reviews
What engineers say about us
I really like the way Nick covers programming topics on YouTube, so when I saw he had courses available, I went for them (Zero to hero API and DI courses). Not going to lie, initially, I thought the price was a little expensive, but I still went for it. After going through them, I now believe they are SO CHEAP FOR THE VALUE. There is so much content packed into them, but the real gem is the insider professional knowledge and tips he shares. Overall, 100% recommend.
Gwyneth Peña-Siguenza
Cloud Advocate @ Microsoft
As always Nick makes the concepts so simple for anyone to grasp. The way he showcases the unit testing techniques, by following practical examples of day to day problems that engineers are facing, is truly remarkable. Thanks Nick. Keep rocking and keep coding!
Orestis Meikopoulos
Azure Service Engineer @ Microsoft
Nick's course are very easy to understand, they cover things in a very efficient manner, and the content is easy to find if I ever need to review something. Nick includes the sample code from the lessons broken up based off of how far you are into the courses as well, this make it easy to quickly set up and follow along from any part of the course. Overall I have to say Nick is the best teacher I have ever relied on to learn from beginner to expert.
Darnell Williams
Junior Developer @ EightBot
I really like the way Nick covers programming topics on YouTube, so when I saw he had courses available, I went for them (Zero to hero API and DI courses). Not going to lie, initially, I thought the price was a little expensive, but I still went for it. After going through them, I now believe they are SO CHEAP FOR THE VALUE. There is so much content packed into them, but the real gem is the insider professional knowledge and tips he shares. Overall, 100% recommend.
Gwyneth Peña-Siguenza
Cloud Advocate @ Microsoft
As always Nick makes the concepts so simple for anyone to grasp. The way he showcases the unit testing techniques, by following practical examples of day to day problems that engineers are facing, is truly remarkable. Thanks Nick. Keep rocking and keep coding!
Orestis Meikopoulos
Azure Service Engineer @ Microsoft
Nick's course are very easy to understand, they cover things in a very efficient manner, and the content is easy to find if I ever need to review something. Nick includes the sample code from the lessons broken up based off of how far you are into the courses as well, this make it easy to quickly set up and follow along from any part of the course. Overall I have to say Nick is the best teacher I have ever relied on to learn from beginner to expert.
Darnell Williams
Junior Developer @ EightBot
I really like the way Nick covers programming topics on YouTube, so when I saw he had courses available, I went for them (Zero to hero API and DI courses). Not going to lie, initially, I thought the price was a little expensive, but I still went for it. After going through them, I now believe they are SO CHEAP FOR THE VALUE. There is so much content packed into them, but the real gem is the insider professional knowledge and tips he shares. Overall, 100% recommend.
Gwyneth Peña-Siguenza
Cloud Advocate @ Microsoft
As always Nick makes the concepts so simple for anyone to grasp. The way he showcases the unit testing techniques, by following practical examples of day to day problems that engineers are facing, is truly remarkable. Thanks Nick. Keep rocking and keep coding!
Orestis Meikopoulos
Azure Service Engineer @ Microsoft
Nick's course are very easy to understand, they cover things in a very efficient manner, and the content is easy to find if I ever need to review something. Nick includes the sample code from the lessons broken up based off of how far you are into the courses as well, this make it easy to quickly set up and follow along from any part of the course. Overall I have to say Nick is the best teacher I have ever relied on to learn from beginner to expert.
Darnell Williams
Junior Developer @ EightBot
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