An artist preparing a brush to paint with is not doing art, they're doing engineering to make art tools.
They employ those art tools to make art, but the tools themselves are works of engineering, not art.
That isn't to say that art tools cannot be art, such as source code that's formatted like poetry or ASCII images, but that's a very different sort of design work than the development of base functions.
Software companies don't want you to know this, but the open-source licenses on the internet are free. You can just take them home. I have 458 apps.