I'm Mason Catt, a Senior Product Designer and Visual Systems Designer based in Los Angeles. For 15+ years I've been building and scaling complex digital products across platforms and brands — from Amazon advertising to Microsoft's Windows design system.
A decade of building things that matter — at companies that care about craft.
Creating and refining system components, iconography, and visual foundations for Windows design systems. Building production-aligned Figma libraries and partnering closely with engineering for pixel-accurate implementation.
Directed visual and UX design across global fintech and payments products. Led the visual redesign of the U.S. credit card product, elevating clarity and usability. Maintained visual consistency across international markets and localized experiences.
Led UX strategy, research, and launch of the new Savings product. Onboarded and established the first centralized Figma library and asset repository at the company. Contributed early vision concepts for Debit and Credit initiatives.
Created visual guidelines, UI assets, and custom illustrations for clients including Netflix, Facebook Libra, and Apple Home. Developed iconography and digital artwork supporting brand campaigns.
Designed and launched advertising experiences across mobile, web, audio, and TV. Created conceptual artwork, diagrams, and marketing-ready visual assets. Won the Gold Clio Award for Theatrical Innovation.
…the stack behind the magic
The best product work isn't about individual screens — it's about building foundations that make every screen better. Invest in systems early.
Confusing design is a form of disrespect. Every hierarchy decision, every label, every interaction should make the user's life easier, not harder.
Perfect is the enemy of good, but "good enough" isn't good enough either. Find the sweet spot — then get it in front of real people.
"Knowing what you don't want is a big step towards getting what you do."— something that stuck with me
Work, ideas, collaboration, or just good conversation — I'm around.