Give your team the tools they need to consistently write high-quality code and dramatically increase their productivity.

Your team is made up of software developers, data scientists, or researchers but they're struggling to work together on a shared code base? You're finding it difficult to get everyone to produce high-quality code that follows best practices? The Software Designer Mindset is your answer. 


What my students say about this course

"I joined my current company right before the refactoring of a critical component of our software stack. The teachings of the course helped us [identify] several issues in the old design, as well as avoiding pitfalls in the design of the new version of the tool."

Matteo, Deep Learning Engineer.

"I've got my motivation back. I want to jump on new projects and do them better than in the old ones. Be focused on what matter when coding, not just "make it works" but "make it well" (readable, changeable, maintainable, independent...)"

Joaquin, Software Developer.

"I actually went through most of the course material before getting unexpectedly moved into a development-heavy team, which I've never worked on before. I feel much more prepared to tackle some of the challenges, especially knowing the level of code scrutiny and review is much higher than I've ever dealt with."

Matt, Solution Architect.

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

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

Does your development team really know how to work on complex software?

Software changes all the time and relies on other software that's also ever-changing. Your team consists of different people who write code in different ways. 

Even in the best-case scenario, where your team is made of seasoned software engineers who know the best practices and have a well-rounded background in computer science, it's incredibly challenging to keep things structured and consistently produce quality work.

The reality is usually very different. Most teams are multidisciplinary, with a mix of software engineers, data scientists, researchers and designers. Not everyone has the knowledge that's needed to work on complex software and make good software design decisions. If you let your team work on software without providing them with the knowledge to do this properly, it's a recipe for disaster.

Here are a few things I often hear inexperienced software developers say:

  • "I have deadlines, so I don't have time to write software tests."
  • "I'm not going to spend a lot of effort refactoring and improving my code. I just need my code to work."
  • "We can improve our software later when our projects are done and we have more time." (Spoiler alert: this will never happen!)

When a team has this mindset, I can guarantee that their code will become really hard to manage, really soon. I've been there.


What happens if you don't take action?

You'll end up with spaghetti scripts that nobody dares to touch because every change you make seems to break everything and results in a cascade of other problems. Your code will contain more and more bugs that cost your team an increasing amount of time to fix. And hiring extra people only makes problems worse since you add yet another person to your team, while not addressing what really causes the problem. 

If you let things fester, your costs will go up, you'll start missing deadlines. Your software will have a ton of bugs and other problems. Your customers will be extremely unhappy. If your team works with data, there will be errors in the outcome that may have severe consequences since your business takes decisions based on wrong information. If you're not careful, you'll endanger your entire company's existence.

I'm Arjan,


I encountered these significant challenges in software development:

  • When I was a teacher and part of a research team at university
  • Within my own startup companies
  • With companies I've helped streamline their software development team and processes.

At university, we struggled to create a productive team of strongly opinionated researchers that had to work together.

In my startups, the challenge was and still is to ship products fast, while making sure we can deliver stable software for the thousands of people who started using our platforms.

I've had to become extremely efficient at designing software that's easy to rewrite (in parts) so we could move faster as a company.

What I found highly impactful is making sure that everybody on the team understands software designSuccessful software design isn't about extensive refactoring of your code. It's about making judicious decisions at the start that will make your software easy to rewrite and test, accelerating your team's productivity without compromising your product's stability or scalability and the user experience.

Your team needs to develop a mindset that allows them to take better software design decisions quickly and unanimously.

Meet The Software Designer Mindset for Teams! ⚡️

This course is a modern take on software design that gives your team the tools to dramatically improve the way they work together on software. After following the course, every member of your team will:

  • Know the same design language
  • Be able to apply the concepts from the course and make better decisions at the start of each project, saving your team and your company a lot of time and money 👀
  • Finally get rid of that legacy code
  • Build software in a sustainable way so they encounter fewer problems in the future
  • Build software with testing and flexibility in mind

Your customers and colleagues are going to rave about your team's ability to deliver high-quality work so consistently. 

Because the course uses Python for all code examples, it's especially useful for multidisciplinary teams with people that don't have a computer science background. Python is a widely used language that's easy to learn. Adding the concepts that this course teaches truly takes the skill of your team members to the next level. Even better: your team will be able to apply what they'll learn in the Software Designer Mindset to any programming language and any future software project.

 With this course, your team members will:

  • Dramatically increase the quality of the code they produce
  • Instantly boost their software design knowledge, allowing them to make better design decisions
  • Respond to customer feedback way faster than the competition by having software that’s a breeze to change
  • Offer a robust software solution that’s built with easy testing in mind
  • Have a design vocabulary that allows them to operate as a close-knit team
  • Make fewer mistakes in their data processing and analysis pipelines, by leveraging industry-standard best practices for software design
  • Get rid of bad quality code that’s impossible to maintain as your team changes over time
  • Erase technical debt and be able to manage it much better
  • Save development costs by having a higher-skilled development team

Full course curriculum

🎓 Each course chapter contains:

  • Downloadable Python code examples,
  • Quizzes and exercises so you can sharpen your design skills,
  • Tips and tricks per lesson, taken from my own experience of teaching computer science and developing complete software products.

And best of all... your team gets to join the ArjanCodes community! 

Enrollment in the course also includes access to a private student community where members can connect with people from all around the world who are on the same learning path, exchange ideas. Find new friends to start exciting software projects with, and get extra support when needed!

Hear from my students!

"Thank you very much for this course. I am already successively using the acquired knowledge in my daily work as well as in my own projects [...]".

Kacper, Software Engineer.

"I was formerly a Java Developer, this course assisted me in adjusting to the Python environment quickly and effectively. Many of the concepts taught in this course have found their way into my daily development."

Gary, Software Developer.

"I haven't completed the course yet, but I have already been able to apply some principles to my software planning and development at work."

Raul, Software Developer.

"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."


This course is for your team if:

  • You have a multidisciplinary team and not everyone on your team has a computer science background.
  • You are truly willing to invest in your team and put in the work.
  • You're open to receiving a critical analysis of the code you deliver and you don't mind hard questions.
  • You are in this for the long term and you understand that this takes an effort in the short term.

This course is NOT for your team if: 

  • You expect results without putting in the effort. This program is not a magic bullet. You have to be serious about improving your team and be willing to follow the feedback you'll receive.
  • Not everybody on your team is invested in improving how you work together. You can't have detractors on your team as this will block your progress and lead to suboptimal results.
  • The company you work at doesn't value personal development. Improving the quality of your work requires an initial effort that can only be seen in the long term. However, if you're persistent the results you'll get are going to be remarkable.

Take your team to the next level!

Pick the right package for your team.


Give your team the essential knowledge of software design

  • Full access to the main course content (7+ hours of material)
  • Code examples
  • Exercises and quizzes
  • Private student community on Discord
  • Building an API from scratch (2+ hours of material)
  • Quick wins to improve your software design (15 videos)
  • Lifetime access
  • Certificate of Completion


Take your team's software design skills to the next level

Everything included in ESSENTIAL, plus:

  • PYTHONIC PATTERNS 3+ hours add-on, including:
  • Extra quizzes and exercises
  • Mermaid diagrams ready to integrate into your own designs
  • Design pattern reference implementations
  • Pythonic Patterns
  • Certificate of Completion 


A premium course experience customized for your team

Everything included in PRO, plus:

  • A custom review of your team’s code
  • A live, in-depth workshop discussing your team’s code, improving the way your team works together and general Q&A (2 hours)

Note: this package is only available for a minimum of 5 team members.



Frequently Asked Questions

The beauty of The Software Designer Mindset course for teams is that your team will learn all the software design best practices, taken from my more than 20 years of experience teaching computer science and developing products.
You will be able to streamline your internal processes and truly take your team to the next level. All of this is contained in one package that's available to your team members 24/7, so they can all go through the course at their own pace.
Invest in your team's knowledge, and unlock their full potential. 
Your company and customers will never thank you enough! 

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