The Software Designer Mindset

Become a senior developer

Solve intricate software design challenges, craft code that's clean and easy to work on. Completely change the way you approach software design.

What my students say

Unlike other courses, the course is not language-oriented. I mean, although it is based on Python, the principles described here can be used with any programming language.

Anonymous student

I must admit that I'm a bit ashamed that I didn't do this sooner, I've been an 'ok' software developer for 9 years, but now I want to be a good software developer.

Software developer

This course has provided me with tools that I didn't even consider when writing code. I now think about these concepts beforehand.

Software Engineer

It focused on the actual way of thinking about the problems, not just the mechanics of implementation, or dwelling on the beginner-type content. I usually never buy courses, only books, because the courses usually disappoint (not at all with this one!).

Solution Architect

People who bought The Software Designer Mindset gave it an NPS score of 68 with 73% Promoters, 22% Passives, 5% Detractors.

What's a good NPS score? Read more about it here.

NPS score

Did you know the difference in salary between a junior and a senior developer in the US is around $65,000 per year?

This shows how important it is to invest in yourself: the potential gain is enormous!

Becoming a senior developer means you have to be a great programmer. To become a great programmer, you have to know how to solve the complex problems that no one else can solve. You need to know how to structure problems logically so you can translate them into software.

How do you close the gap between the junior and senior level?

There's a lot of helpful material online, but there's also a lot of wrong, outdated information and bad coding practices that are still being promoted today.

You can try to climb that ladder alone and spend a lot of time figuring out what you need to learn, only to have to unlearn things if you've followed the wrong advice. You might end up farther away from your goal of becoming a senior developer, throwing away thousands of dollars per month because you're not able to make that next move in your career.

But why make it so hard on yourself if there's another path?

A path where you're intentional about investing in yourself. A path where you can be part of a community and be surrounded by peers. A path where I'll be there to guide you, and teach you the best practices of software design that get you results. That path is available to you right now.

I'm Arjan.

A software developer and educator with a passion for building beautiful, efficient, and reliable software. I've been passionate about programming and computer science since I was a kid.

I've completed a Master's and PhD in Computer Science and I have more than 20 years of teaching experience. I've launched several startups and designed and built complex software products from scratch.

Now, I combine all my experiences to create YouTube videos on my channel, ArjanCodes. I also offer various types of courses for developers and companies.


Meet The Software Designer Mindset!


This online course is a modern take on software design. It contains everything I know about software design, structured in such a way that you will:

  • Consistently make better design decisions
  • Gain the technical knowledge you need to get to the next step of your career
  • Design complex software
  • Improve your existing code immensely
  • Create software that is easy to change and scale

Ultimately, its only goal is to make you unlock your full potential.

On top of that, you'll be part of a private student community where you can exchange with people all over the world, find friends, and get extra support when you need it.

Good to know

In this course, I use Python for all code examples. The beauty of Python is that it's flexible: it supports both object-oriented programming as well as functional programming.

That makes it the ideal language to teach software design. However, even though the course uses Python, you can apply the principles that you learn in this course to any programming language and software project.

Full course curriculum

Each module of the course has code examples written in Python that you can download. There are also quizzes and exercises so you can sharpen your design skills. Each lesson is filled to the brim with tips and tricks taken from my own experience of teaching computer science and developing complete software products.

This course is for you if:

  • You have basic Python programming experience and you want to take your skills to the next level.
  • You truly want to become a better software developer and you're willing to invest in yourself and put in the work.
  • You want to grow into a senior software developer position, but you want to do it efficiently.
  • You love writing beautiful code that feels like it's the perfect fit for a software problem.
  • You want to connect with like-minded people all over the world, and you're not afraid to ask questions.

This course is NOT for you if:

  • You have no Python programming experience at all. In order to follow the course, you need to have basic Python knowledge. However, if you're able to follow my videos on YouTube, you'll be able to follow the course.
  • You expect results without putting in the effort. You have to be serious about becoming a senior software developer and be willing to put in the time and follow the principles.
  • You expect a course that gives you recipes to do a specific thing. This course focuses on something deeper: the principles behind the recipes, and the mindset you need to come up with your own recipes.
  • You hate Python :)

My courses get 5-star Google reviews!

See more reviews here.

The choice is yours

Pick whichever version of the course is right for you!


Everything you need to become a software design expert

  • Full access to the main course content (7+ hours of material)
  • Exercises and quizzes
  • Private student community on Discord
  • Lifetime Access
  • Certificate of Completion


Take your software design skills to the next level

Everything in BASIC, plus:

  • Building an API from scratch (2+ hours of extra material)
  • Quick wins to improve your software design (15 videos)


A premium, personalized course experience

Everything in COMPLETE, plus:

  • A custom video delivered by Arjan with an in-depth review of your code and architectural setup as well as tips and general feedback.
ℹ️ If you want to pay via invoice or buy this course for more than one team member, go here.

Don't forget: it's completely risk-free

Money back guarantee

I've packed a lot into The Software Designer Mindset, because not only do I want you to succeed as a software architect, but I want to guarantee that you don't fail.

And to make it a no-brainer deal for you I'm giving you a 30-day 100% money-back guarantee with your purchase of The Software Designer Mindset today.

That's right: go through the course material, follow the steps, put in the work, and if you don't love it in the first 30 days of your purchase, send me an email and I'll refund you immediately. No questions asked, no hard feelings.

If the course doesn't work for you, I'd much prefer for you to take your money and invest it where you will be happier and get results. I just want you to unlock your full potential!

Get ArjanCodes Courses for Your Team

Next to helping individual developers improve their skills, I also work with companies to help their software development teams make better design decisions, get rid of legacy code and build flexible, future-proof software.

Our team packages are a great fit for multidisciplinary teams that include not only software developers but also data scientists, researchers, and designers.

Frequently Asked Questions

The beauty of The Software Designer Mindset course is that you can:

  • Learn all the software design best practices, taken from my more than 20 years of experience teaching computer science and developing products,
  • Skip all of the pain and mistakes that I made, all in one package, available 24/7, that you can go through at your own pace.

It couldn't be easier or more convenient! Do your future self a favor and be brave. Invest in yourself and unlock your full potential as a software designer.

Your life will never be the same!

See you on the inside...


NPS score

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