Katie DeVoe / Product design
I’m Katie, a Staff Product Designer at Ninety, working across core product, design systems, and AI.
Explore selected work ↓
Three ways I bring clarity to complexity.
01 / Ninety · AI agents · Alpha
End-to-end UX and UI for AI agents. Clear instructions, understandable access, and a simpler way to get started.
Removed tool selection through design and engineering collaboration.
View case study ↗02 / Ninety · Design systems
From the component library to the product: aligning Figma and code, documenting decisions, and evolving Terra for AI and mobile.
A system that evolves through the products that use it.
View case study ↗03 / Ninety · Mobile
Designing Ninety’s first mobile experience around the tasks people need on the go, rather than recreating the desktop product.
From zero to Apple’s Top 100 Business Apps.
View case study ↗How I work
I use working prototypes to test behavior and turn abstract disagreements into decisions people can try.
I work with engineering early. Sometimes the best design decision is removing a choice that never needed to be there.
I use product work to improve shared patterns, so a solution can help more than one screen or team.
Beyond the screen
Outside product design, I photograph families and newborns. I live in Upstate New York with my husband and two daughters.
Photography is another part of my creative life: paying attention to people, light, and the moments worth keeping.
More about me ↗Get in touch