The story behind ...
Software development at its core is the analysis of a real world business into its smallest possible units, followed by a virtual transformation and synthesis of that units back into a virtual system.
The comprehenive analysis of the business needs into its unique components, segregated by distinct responsiblities in the overall system, is the crucial challange a software engineer faces every day.
That said, the entire process of transformation brings the best results, when followed with the strategy of strong and consquent adherence to proven design principles.
On my daily work as a software engineer, i put a lot of effort into realizing these guidelines to a great extent, resulting in stable, scalable and manageable products.