We want our users to kick ass
We build our products for our users, and we value their choices. We aim to use patterns consistently so that our users don't need to re-learn them every time. And we always play to the strength and flexibility of our products, combined with pretty sensible defaults.
Just enough is more
Atlassian products are about getting your work done as effectively as possible. Inspired by Bauhaus and its focus on functional design, we aim to provide just enough design to create an awesome experience. When in doubt, leave it out.
We want our developers to kick ass
Our aim is to rationalize our design decisions as much as possible so that others can quickly build on them. The design guidelines are built with the Atlassian UI framework (AUI). The AUI flat pack is great for rapid prototyping.