Courses crafted for the real world - Dometrain

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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.
Watch lessons, write and run real code, and keep your daily practice going. On iPhone, iPad and Android.
Free to download. Downloads need Lite, Pro or lifetime access.
Every part of Dometrain is designed around doing the work: real code, real tests, real design decisions, and honest feedback at every step.
Recorded by principal-level engineers who build and run production systems. You get the technique, the trade-offs, and the scars behind it.
Write real code against real test suites, right in your browser. No setup, no repo cloning, instant feedback on every run.
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.
Design architectures block by block on an interactive canvas, with checks that know the lesson. The agent builds and reviews diagrams with you.
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.
Certificates, streaks and progression stats, and learning paths that end with a certificate when you finish them.
Follow a Dometrain path, pick one from the community or build your own from any course. Paths with 5 or more courses give you a certificate when you finish them.
Hand-picked from the catalog, taken by thousands of engineers right now.
Software engineers at the biggest companies in the world use Dometrain to level up themselves and their teams.
engineers train on Dometrain
companies upskill their teams here
of students are satisfied with their course
Watch full free courses without paying a cent, then pick the plan that matches how far you want to go.
Deep dives and practical write-ups from the engineers behind the courses.
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.
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!
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.
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.
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!
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.
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.
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!
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.
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Follow a Dometrain path, pick one from the community or build your own from any course. Paths with 5 or more courses give you