We design interfaces with the engineering behind them in view. Every design decision accounts for what the underlying system can efficiently deliver, so the handoff to development doesn't require redesigning half the product.
Start from user flows and business goals before visual design
Prototype key screens and validate before full design coverage
Build a design system, not a set of one-off screens
Review for accessibility throughout, not as a final pass
Hand off with engineering-ready specifications
Yes -- we regularly join projects mid-design, though we'll flag early if the existing direction conflicts with engineering constraints we can see coming.