Design systems
Token-driven Figma libraries that scale across teams without fragmenting.
- Variable & token architecture
- Component API & slot design
- Contribution & versioning model
- Adoption tracking & docs
User Experience Designer · Boston
I build design systems people can actually use.
I'm Matt Gallagher, a User Experience Designer at Fidelity. I specialize in institutional crypto products, designing the complex financial flows that high net worth individuals depend on, built on accessible design systems in Figma where precision is the baseline.
About
Twelve years turning research into interfaces people trust with real money.
I'm a User Experience Designer at Fidelity, where I specialize in institutional crypto products. Since 2022 I've designed the complex financial flows that high net worth individuals use to custody and move significant digital assets. At that scale an unclear step carries real financial risk, so clarity is the entire job, and that is exactly the kind of problem I want to be working on.
My practice spans four areas: design systems, accessibility personas, user testing, and the UX of AI features. I run a design system as a product in its own right, held to the same research and accessibility standard as anything a customer sees. One principle has carried across every role: design interfaces that perform under real use, for every user, including the ones most products overlook.
What I do
Four disciplines, treated as one practice.
Accessibility personas
Research-based personas I design and test against, so WCAG 2.2 is earned through real use.
- Persona research & profiles
- Assistive-tech walkthroughs
- WCAG 2.2 AA / AAA targets
- Accessibility annotations in Figma
User testing
Moderated and unmoderated studies turned into specific, prioritized design changes.
- Test plans & task design
- Moderated & unmoderated studies
- Synthesis & severity ranking
- Findings → backlog traceability
UX AI integrations
The human side of AI features, validated with users in high-stakes financial flows.
- Prompt & response UX patterns
- Trust, transparency & disclosure
- Human-in-the-loop controls
- Evaluating AI flows with users
Where I've worked
My work history. A PDF copy is at the bottom.
2022 to now
Fidelity
Principal UX Designer
I own the design for Fidelity's institutional crypto products, the platform high net worth clients use to custody and move large digital asset positions. I came in, untangled flows that were quietly losing users, and rebuilt them into something people trust with serious money.
- Built the product's Figma design system from scratch and got multiple squads designing and shipping from one source of truth.
- Stood up accessibility persona research and rebuilt the core flows to WCAG 2.2 AA, closing the gaps automated audits never catch.
- Ran the usability studies that settled long-running design debates, then pushed the fixes into the backlog and saw them ship.
- Shaped how AI shows up in the product: what it says, when it hands off to a person, and how clients stay in control of their money.
2015 to 2022
Sallie Mae Bank
User Experience Developer
Led prototyping in an agile environment, building in HTML, CSS, and JavaScript to support user testing throughout the UX process.
- Founded the design system effort, grounded in atomic design, and grew it into a shared team resource.
- Applied the Lean UX Canvas and information architecture lenses to keep the team focused on the customer experience.
- Produced research- and testing-driven wireframes in Sketch.
2015
Scratch Marketing and Media
Graphic Designer
Designed and produced online media assets on tight deadlines while expanding into web design and information architecture.
Download résumé (PDF)
B.A. Graphic Design, Roger Williams University, 2015
This page's design system
The work itself is under NDA, so instead of case studies, here is the proof. Every screen on this site is built from one small system. These are its actual parts.
Color
--inkforeground
--papersurface
--cardraised
--accentbrand red
--accent-inkAA text
--lineborder
Type
H1
Page title
The one big headline at the top of a page. Only one per page.
H2
Section heading
Starts each major section, like About or Experience.
H3
Subheading
Titles inside a section, like a company or a card.
Body
The text you read in paragraphs and lists.
Everything that is not a heading.
Headings are set in Fraunces; body is Montserrat, the original brand typeface from the site and resume. Sizes step down on a fixed scale so the hierarchy stays consistent on every screen.
Components
That is the system every screen here is assembled from. The real product work behind the NDA I can walk you through directly, decisions and trade-offs included.
Get in touch
The fastest way to reach me.
Let's talk.
Tell me a little about the project, the team, or the problem. I read everything that comes through and I will get back to you.