Nail Your Next Project
Learn the essentials of Domain-Driven Design by writing real-life Go code. Master reliable backend systems.
- ๐๏ธ Get real experience using DDD patterns
- ๐ฏ Solve real-life problems, not toy examples
- ๐ Write idiomatic Go, not overengineered abstractions
- ๐ Learn battle-tested ideas based on years of experience
- ๐ Go at your own pace with lifetime access
NOTE: The next sale of The Domain Engineer will run Beginning of 2026.
Join the wait list to get notified when it's available.
Great hands-on course that immediately puts the theory into practical example.
Small focused programming tasks and one longer bigger project that is built through the whole course is great for having isolated examples of the concepts and also their place in overall architecture which is often missing in courses/tutorials.
And as a bonus contains clever tool that allows you to work on the examples in any IDE you prefer AND does run robust tests that make sure the code works properly.
Petr Vitek, Developer
Review of our previous training
You can't buy time
It's rare to find high-quality learning materials. They're often inconsistent, outdated, or incomplete. (We've been there.)
The Domain Engineer distills practical knowledge and years of experience. We focus on essential topics and filter out the noise to ensure you're productive right away.
Hands-On
You can't learn to drive a car from a book or a video, and writing software is the same.
This training is all about practice. To grasp the topics, you'll get your hands dirty with coding. If you prefer passively watching videos, you're on the wrong website.
Real-world examples
Have you ever wondered why many tutorials use a coffee machine analogy? Proper examples require work.
Abstract or too simple examples leave you unprepared for real-world challenges. In The Domain Engineer, you apply what you learn to a real-world project.
Stay in your environment. Use your favorite tools.
Our platform guides you through the training. It's a unique experience that helps you learn the fastest way possible: by doing. You won't learn this way anywhere else.
Work on real-life projects doesn't happen in the browser. We let you stay with your favorite tools. VS Code, GoLand, Vim, Emacs? It's up to you.
What graduates like about our platform?
Damian Trzepaลa, Software Development EngineerThe CLI tool they've got for hands-on exercises is a game-changer. The CLI tool functions like an interactive debugger, giving immediate feedback and validation as you work through coding exercises. I'm looking forward to using what I learned directly in my job.
The Discord community is also a big win. It's not every day you get to chat directly with the people who made the course. They're super helpful and quick to answer any questions. Also, they continuously take feedback and improve the course.
What will you learn?
You will practice each topic with smaller exercises, and then apply them to a complete application.
See the list of topics we plan to cover below.
The exact content may change as we develop the training.
What you will learn
- โ ๏ธ Know when DDD adds unnecessary complexity and use simpler patterns instead
- โ ๏ธ Apply only the DDD patterns you need - from light tactical patterns to full strategic design
- โ ๏ธ Avoid common over-engineering traps that make codebases harder to maintain
What you will learn
- โ ๏ธ Build maintainable codebases that don't turn into big balls of mud
- โ ๏ธ Structure your project to handle complexity as your team grows
- โ ๏ธ Create clear boundaries between modules
What you will learn
- โ ๏ธ Split large projects into manageable pieces that teams can own
- โ ๏ธ Define clear contracts between different parts of your system
- โ ๏ธ Avoid merge conflicts and overhead in large codebases
What you will learn
- โ ๏ธ Model complex business logic that actually reflects real-world problems
- โ ๏ธ Write domain code that business stakeholders understand
- โ ๏ธ Separate business rules from infrastructure for better testing
What you will learn
- โ ๏ธ Design the transactional boundaries of your domain model
- โ ๏ธ Protect data consistency in complex scenarios without database locks
- โ ๏ธ Handle concurrent operations safely in high-load systems
What you will learn
- โ ๏ธ Map bounded contexts to microservices without creating distributed monoliths
- โ ๏ธ Decide when to split services and when to keep them together
- โ ๏ธ Design service boundaries that align with team ownership
What you will learn
- โ ๏ธ Decouple your domain from database implementation details
- โ ๏ธ Make your logic code easier to test
- โ ๏ธ Handle complex queries without leaking infrastructure details into your domain
What you will learn
- โ ๏ธ Understand how Event Storming sessions reveal domain complexity
- โ ๏ธ Transform sticky notes and events into concrete bounded contexts and aggregates
- โ ๏ธ Bridge the gap between business understanding and technical implementation
What you will learn
- โ ๏ธ Bridge communication gaps between developers and business
- โ ๏ธ Reduce time spent on requirement clarifications and bug fixes
- โ ๏ธ Create a shared vocabulary that evolves with your project
What you will learn
- โ ๏ธ Write tests that catch business logic errors, not just technical bugs
- โ ๏ธ Test complex domain scenarios without complicated test setup
- โ ๏ธ Use domain tests as living documentation for business rules
What you will learn
- โ ๏ธ Use Event Storming to discover business requirements
- โ ๏ธ Collaborate with domain experts to build better models
- โ ๏ธ Identify core vs. supporting subdomains to focus on what matters
What you will learn
- โ ๏ธ Add new features without breaking existing functionality
- โ ๏ธ Refactor legacy code incrementally using DDD principles
- โ ๏ธ Plan changes that won't require massive rewrites later
What you will learn
- โ ๏ธ Collaborate with other teams without tight coupling
- โ ๏ธ Define integration patterns that won't break when other teams change their code
- โ ๏ธ Handle external system changes without major refactoring
What you will learn
- โ ๏ธ Execute bulk operations without loading thousands of entities into memory
- โ ๏ธ Optimize database queries while keeping domain logic pure and testable
What you will learn
- โ ๏ธ Learn how to emit domain events to decouple parts of your system
- โ ๏ธ Introduction to event-driven architecture
What you will learn
- โ ๏ธ Understand facts and myths about CQRS
- โ ๏ธ Separate read and write models for better separation of concerns
- โ ๏ธ Use read models for easier querying and reporting
What you will learn
- โ ๏ธ Call external APIs from your domain without creating tight coupling
- โ ๏ธ Create contracts that enable independent team development
- โ ๏ธ Design adapters that isolate your core business logic
What you will learn
- โ ๏ธ Use ORM without sacrificing clean domain design and performance
- โ ๏ธ Map between database models and domain objects effectively
- โ ๏ธ Avoid the common pitfall of anemic domain models
What you will learn
- โ ๏ธ Handle external calls from domain entities without violating DDD principles
- โ ๏ธ Design entities that can make decisions based on external data
What you will learn
- โ ๏ธ Inject configuration into entities without breaking encapsulation
- โ ๏ธ Handle feature flags and environment-specific behavior in domain code
- โ ๏ธ Design entities that adapt their behavior based on runtime configuration
Don't miss when the training is ready
The Domain Engineer is not available yet. We are planning the release Beginning of 2026. Usually, our training are available to buy for just two weeks, twice a year. Join the waiting list and be the first to know.