When advancing in our careers as developers, we come across some questions about the structure of our software. Before long, the main question about solving a problem is not about what to do anymore, but how to do it elegantly. We start looking for better development tactics and how to make our code mode readable and easier to maintain. Not only because it’s more elegant, but doing so can significantly save us time, as sometimes we spend more time trying to understand it than really writing it. In this self-development journey, everything is beautiful. In this article, I’ll share how you can use the SOLID principles to make your code flexible and maintainable.