A clear, step-by-step system for building modern .NET applications:
This practical course shows you how to structure, test, and secure real .NET apps using a combination of Clean and Vertical Slice architectures, trusted by teams building professional backend systems.
With step-by-step video lessons, full source code, and a reusable structure, you’ll finally stop guessing and start building backend apps the right way.
If any of these sound familiar… then Backend Brilliance was made for you.
Excellent course!
It provided clear insights into backend architecture, API security, and testing. The practical approach made it easy to apply concepts in real projects.
Highly recommended for developers looking to build scalable and secure applications!
Senior .NET Developer, 8 Years of Experience
Senior .NET developer. 13+ years of experience. I’ve worked across the full spectrum: from WinForms and Web Forms, to building modern .NET cloud applications for enterprise systems that generate millions annually.
A few data points to show, when it comes to delivering production .NET apps (and teaching about it), I know what I’m talking about!
7 problems most mid-senior developers with 5+ years of experience struggle with:
And in Backend Brilliance, I show you how to demolish all these - one by one.
The biggest mistake developers make when starting a project from scratch?
Enterprise overengineering.
Some devs think they're building the next Amazon. So they put CQRS, event buses, mediators, and five service layers into a simple CRUD app.
The result?
Every change requires going through:
Just to return an additional field from your database.
Meanwhile, productivity tanks. Features that should take hours now take weeks. And all because someone thought "more layers" meant "more professional."
Inside the course, you will architect and structure solutions that are simple to start with and can easily scale when requirements become more complex.
The second biggest mistake .NET developers make?
They are parrot-mimicking:
I’ll demystify how to use Clean Architecture + Vertical Slice combination so you can design from scratch. Not just follow along.
The third biggest mistake .NET developers make?
Reinventing the wheel when it comes to auth.
They invest time and energy into creating a register and login features. The same auth features that have already been developed, tested, and widely used within the community.
And in the end? They left with something that barely works. And they constantly need to improve, maintain, and test.
Value and protect your time.
Use proven solutions. I’ll show you how to implement authentication and authorization at production grade.
It is a complete course with a lot of relevant information. If you want to update your knowledge in .NET Backend development from architecture to testing and security, surely you will find that piece that you are missing for your career.
Senior .NET Developer, 15 Years of Experience
Backend Brilliance includes more than just video lessons.
I built the course with bonus resources to make sure you apply what you learn.
✅ Bonus #1: Full Source Code (Minimal API + Controllers) - €100 value
Reference the entire course app in two flavors. Ready to explore, copy, and build on.
✅ Bonus #2: Stay Sharp C# Checklist (C# 9–13) -
€19 value
Quickly catch up on new C# features with clear explanations and real code examples.
✅ Bonus #3: C# Unit Testing Essentials in One Afternoon -
€27 value
Start writing maintainable tests that enable safe refactoring and reduce bugs found by clients.
However, if you’d prefer additional one-to-one support, you might consider the Backend Brilliance Coaching package.
This is for you if you want to accelerate your skills by working closely with me. You get the same material, but also coaching to help quickly find your weak spots and improve how you develop professional apps.
Join Backend Brilliance, explore the materials, and watch the lessons.
If you’re not 100% satisfied with the Backend Brilliance course or the support after 14 days, feel free to email me for a full refund.
Make your payment today, and decide later if this is a good fit for you!
Take the full 14 days to explore the materials and experience the Backend Brilliance course and THEN... make a decision using the information YOU HAVE, rather than the information you don’t.
You’ll learn to build well-structured, maintainable, scalable, testable, and secure production-ready .NET applications. These are the same principles I’ve used in many enterprise projects I’ve worked on in the last 13 years:
I’ve spent 200+ hours over 5 months refining the course material and put a lot of value inside 5 hours and 16 minutes. The course is designed to be easy to follow with a step-by-step guide.
I’ve used many of the techniques from the course in existing enterprise apps. For example, I’ve used the CIA solution structure (from Software Architecture Workshop) to reorganize 2 existing .NET applications. So that the feature code has high cohesion. And it’s separated from the infrastructure code.
The course comes with 3 workshops (€300 value): Software Architecture Workshop, Automated Testing Workshop, and Web API Security Workshop. In addition, it has 3 bonuses with a total value of €146. That brings the total course value to the €446.
With that said, the course is only €97. That’s it. No recurring payments. And no real risk since you have a 14-day money-back guarantee.
Using the skills inside the course, I was more confident to apply for another, higher-paying job in 2021, and got raises due to good work while using these skills.
Compared to my salary in 2021, my salary now is 59% higher.
I can’t guarantee you’ll achieve the same, but that’s what I was able to do in the last 4 years despite the ongoing crisis in the IT sector.
When you purchase today, you get access to everything.
Plus, each lesson averages just 8:19 minutes, making it easy to fit learning into even the busiest schedule.
If you have any questions, you can reach out to me at any time. Just send an email to kristijan@blueinvader.com.
Your enrollment includes unlimited lifetime access and free updates for life.
