UX Researcher · Innovation Strategist · ex-Mastercard

Matt Barham

I help high-stakes products earn their place in people's lives.

Fourteen years of UX research and innovation at Mastercard — a decade as a pure researcher (125+ studies), foundational payments work from the U.S. chip-card rollout to Apple Pay, designing the platform that configures how cards behave, the employee experience of a 30,000-person enterprise, and dozens of innovation engagements inside a lab recognized among the world's best. The constant: turning high-stakes questions into products people actually adopt.

14+ yrsUX research & innovation
125+UX studies led
$6M+workshop revenue · 18 mo
Dozensinnovation engagements led
95%satisfaction · Treasury platform

Let's start with the work.

Selected work

Case studies

High-stakes product work across payments, government benefits, lending, and the enterprise — both kinds of engagement: de-risking new bets before the build, and finding what's quietly broken after launch. Clients are anonymized by descriptor; the outcomes are real.

Pre-launch — make sure you build the right thing
Post-launch — reduce the cost of being wrong
Post-launch research Government benefits · financial inclusion U.S. Treasury × Mastercard

Modernizing how millions receive federal benefits

A U.S. Treasury and Mastercard partnership to move Social Security recipients — many unbanked or underbanked — off mailed checks and clunky call-in systems and onto reloadable prepaid cards with a digital experience they could actually trust.

I ran the depth interviews and usability research with the people who'd actually use it — older adults, people with disabilities, low-digital-literacy and low-income recipients — then synthesized it into the decisions that shaped onboarding and the live UI.

Trust beat innovation. Calling in to check a balance wasn't friction to design away — it was a daily anxiety-relief ritual to honor.

95%user satisfaction
$1B+estimated taxpayer savings over 10 years
Millionsadopted it as the default benefit method
Pre-launch innovation Cross-border payments · health Mastercard Digital Labs

A digital front door for medical tourism

Finding a reputable overseas provider, booking the travel, paying safely, and managing aftercare were all separate, broken steps — and the real gap was payments: wire your savings abroad and hope. I led the 40-week innovation engagement that turned that into one trusted, end-to-end platform.

From brief through a validated, user-tested concept and into development — aligning a cross-functional team plus third-party payment and insurance partners around a single experience strategy.

The product was never the app. It was recourse — turning "send the money and pray" into something backed by real rails.

$100M+5-year product potential
$47B+market it opened into
Firstof-its-kind end-to-end platform; new partnerships & an accreditation process
Post-launch research The network's primary B2B platform Mastercard Digital Labs · Connect

Four years inside the network's front door

Mastercard Connect is the primary touchpoint between the network and every customer it has — issuers, acquirers, partners. I spent roughly four years embedded in it, running the research that shaped how customers actually experience the platform.

The clearest example of the job: for years customers complained and no one could quite say why. It turned out Connect had two separate apps with nearly identical names — one called "My Company Manager," another "Manage My Company." Everyone felt the friction; nobody had named the actual problem. Finding that load-bearing confusion, hiding in plain sight, is the work.

When everyone's frustrated but no one can say why, it's usually a question nobody thought to ask — like "wait, why are there two of these?"

~4 yrsembedded on the platform
Globalaudience, with executive visibility
Full stackpersonas, IA, journey mapping, usability & concept testing
Pre-build de-risk · Payments infrastructure Confidential — no artifacts

The deepest one — and the one I can't show you

Mastercard Connect is the network's self-service portal where issuers configure how their card programs behave. Years before that configuration became today's slick self-service product, it lived in a legacy two-axis spreadsheet — dense with the logic that codes card behavior — and I designed its replacement — the Customer Parameter Management app — a single-axis web tool that lost none of that functionality, worked for everyone who might touch it, and did it with the handful of people who understood the system almost entirely unavailable. Two months on paper. It took me a year.

Self-taught on design — working from Connect's own design system and style guides — I taught myself the domain too, sitting in on sales trainings to learn how card parameters actually work, then running 6–7 full usability studies to iterate toward something the few real experts would trust. It was early, foundational work in a shift the whole industry has since made: away from manual, range-bound configuration and toward on-network, self-service control. The deepest financial-services knowledge I've ever built.

This work was internal and confidential — there are no artifacts to show, and some of it still shouldn't be. It's here because it's the clearest example of the discipline: the human-layer de-risking under infrastructure the business couldn't afford to get wrong. Happy to talk through what I can.
More engagements
Pre-launch · Payments

One portal for novices and power-users

A white-label payments provider needed a self-service portal that worked for both first-timers and experts at the software companies (ISVs) they serve — across two genuinely complex spaces, payments and development. I led the 7-week innovation engagement; the client started building in production before we'd even wrapped.

5 personas reconciled · build started in 7 weeks
"A developer's hat doesn't mean you speak payments."
Full case →
Pre-launch · Lending

SMB loan decisions, fast instead of frustrating

A regional bank's commercial-loan process meant paper, disconnected systems, and in-person trips. In a 4-week design-thinking sprint I took a cross-functional room from problem-framing to a validated, high-fidelity prototype and executive pitch.

Paper → validated digital concept · 4 weeks
"Get the executives in the room. Alignment is the real deliverable."
Full case →
Post-launch · Enterprise

Killing the waste in employee tech support

As UX SME for a 30,000-person workforce, I ran the contextual research and stood up the task force that unified 7+ separate help desks and rebuilt how support actually worked — severity-based routing, self-service tools, walk-up support.

7 desks → #1 intranet · ~1,000 fewer tickets/day
"'We never thought to do it any other way' — the most expensive sentence in any org."
Full case →
Foundational payments work

Before all that — the rails themselves

National rollout

Helping launch EMV chip cards in America

When the country moved to chip cards, I ran usability sessions in 12 major U.S. cities and turned the findings into recommendations for major banks and terminal manufacturers — cutting friction during a transition that's now mandatory nationwide.

12 U.S. cities · banks & terminal makers · 2015
"Being in the room for the rails most people never think about."
Full case →
Partnership · Mobile wallets

Helping launch Apple Pay at Mastercard

First-hand work on the Mastercard–Apple Pay partnership — meeting Apple's exacting standards for seamless, trustworthy onboarding as mobile wallets went mainstream.

Apple Pay launch era · tokenization & trust
"When the bar is Apple's, 'good enough' isn't."
Full case →
Breadth

Dozens of engagements, one discipline

The deep dives above are a sample. Across Mastercard Digital Labs and direct client work, I've run dozens of pre- and post-launch engagements — banks, card issuers, payments providers, and software companies. Two dozen-plus were full design-thinking innovation engagements — rare volume in a field where a hundred marks world-class and most practitioners never run more than a handful. A selection, described rather than named:

Pre-launch · Consumer banking
Top-5 US bank · subscription banking

A debt-reduction account that threw the whole toolkit at the problem at once: spot & cancel unused subscriptions, line bills up against paydays, split bills with a partner or roommates, free banker office-hours, an open-banking overview, and financial-inclusion education — penalty fees traded for one very low subscription fee.

HMW help people climb out of debt — turning an account into all-in-one money control, and trading penalty fees for one small subscription.
Pre-launch · Wealth
Top-5 US bank, wealth division

Built engagement-tiered personas — never-logged-in, basic, and active — each with its own barrier to going deeper, then mapped the participant journey from onboarding through annual review into retirement. Delivered a personalization strategy and a prioritized set of feature concepts for a smarter benefits dashboard, brought to life in a working product demo.

HMW deliver a consumer-first digital experience that inspires benefit-plan participants to live their best financial life.
Pre-launch · Card offers
Global card issuer

Ran ten current-state interviews and a one-day strategy workshop to map how credit offers were actually being built across channels. Surfaced the real blockers — fragmented channel-by-channel solicitations, no central offer repository, almost no test-and-learn — and delivered a coherent strategy: a dedicated cross-channel offer team, a real experimentation capability, and a single arbitration engine to replace the silos.

HMW use pre-qualification and prescreen channels to deliver the most cost-effective, engaging offer strategy.
Pre-launch · Loyalty
Global card issuer · repeat client

Segmented the cardholder base from real travel-spend data — finding that 8% of cardholders drove 63% of travel spend — and profiled the high-value traveler types worth winning. An ideation sprint generated 28 concepts, narrowed to a prioritized set of growth experiments, each written as a testable hypothesis with its own KPIs and target segment.

HMW increase cardholder spend through the travel rewards portal.
Post-launch · Retail banking
Large US retail bank

The bank's alert inventory was a manual sprawl — 1,000+ entries across 13 spreadsheet tabs, with no confidence it even captured every touchpoint. Through customer research, an ideation workshop, and quantitative analysis, the core complaint surfaced: irrelevant, un-personalized alerts that quietly eroded trust. Delivered customer personas, a mapped journey, and an MVP for one unified messaging experience.

HMW create a unified alerts and messaging strategy across consumer products.
Innovation · SaaS
Association & nonprofit software company

Across a two-day strategy-and-design sprint, built the case for moving member and association payments off cash and checks and onto cards. Profiled both sides of the platform and pinpointed the real barrier: gaps in awareness, not willingness. Delivered personas, a communication-and-education plan, and stakeholder-ready experiments to drive digital-payment adoption.

HMW increase digital payment adoption — converting cash and check payments to card.
Innovation · Prepaid
Major prepaid & payments provider

Centered the work on the underbanked customer living paycheck to paycheck — mapping the journey from onboarding and KYC through the moments that make or break direct-deposit adoption. A two-day sprint produced 20 problem statements and 32 actionable ideas, converging on a high-fidelity prototype for a prepaid experience that earns frequent use.

HMW grow fully engaged, long-term customers — driving direct deposit and frequent card use.
+ many more,
most under NDA
Research across industries

For clients who couldn't afford a research department, my team was the research department.

Over 14 years I've directed UX research on 125+ products across wildly different industries — the same discipline, re-pointed at whatever the problem in the room actually is.

Fintech & paymentsissuers, prepaid, disbursements, developer tooling
Retail & e-commerceB2C site usability, conversion & loyalty
Real estatelocation-analytics tools for commercial developers
Travel & rewardsrewards portals & booking experiences
Government benefitsfederal prepaid & financial inclusion
Enterprise softwareinternal security & productivity tools
How I work

A long list, one discipline

My work is de-risking: deep discovery and cheap, fast pressure-testing of the assumptions a strategy depends on — before they turn into expensive mistakes. A long method list doesn't make me a jack-of-all-trades.

It makes me a master of translation.

70+named research, product & facilitation methods
175+structured activities in the working library
Usability testingContextual inquiryJourney mappingJTBDDesign-thinking facilitationConcept testingSurvey & statsA/B testingService designRoadmappingStakeholder alignmentGo-to-market readiness

So — who's behind all this?

About

I'm a UX researcher and innovation strategist who spent most of a 14-year career inside Mastercard's Digital Innovation Lab — bringing structured innovation to enterprise clients from federal government to global card issuers, regional banks, and startups.

I've run dozens of full design-thinking innovation engagements at enterprise scale — rare volume in a field where most practitioners run only a handful. The through-line is always the same: find the assumption a bet depends on, and test it before it gets expensive.

Fintech was the crucible, not the cage — the discipline travels to any domain where the cost of being wrong is high.

Today I also run Onyx Studios, my independent UX research and innovation practice — bringing that same discipline to teams making high-stakes bets. onyxstudios.net →

Experience
14+ years
Based
San Francisco, CA
Education
MBA — WashU Olin · BA Psych — Mizzou
Background
ex-Mastercard Digital Labs
Certifications
NN/g · MIT · Prosci · Lean Six Sigma · Forrester
Focus
Research · Innovation · Strategy
Credentials

Education & certifications

Strategy and behavioral science underneath the craft — plus continued, hands-on training in the methods I use every day.

Education

MBA — Washington University in St. Louis
Olin Business School · #19 full-time MBA in the U.S. (2025)
Strategy and leadership, applied directly to research, product, and innovation.
B.A., Psychology — University of Missouri
Top-10% program
The scientific foundation for how I study behavior and design research.

Certifications

UX Interaction Design
Nielsen Norman Group (NN/g)
Research-backed interaction patterns across web, mobile, and complex apps.
Mastering Design Thinking
MIT Sloan
Evidence-based, human-centered innovation: empathy → ideation → prototyping.
Change Management (ADKAR)
Prosci
Driving real adoption so new products and processes actually stick.
Lean Six Sigma — Green Belt
Purdue
DMAIC + Lean toolkit for measurable process improvement.
Journey & Service Mapping
Forrester
Turning maps into decisions and action at organizational scale.

And a few things outside the job description.

Beyond the work

Community & leadership

The things I show up for when no one's assigning them — mentoring, communicating, and keeping the lights on for the people around me.

Mentorship
Intern Coordinator — three times
Coordinated Mastercard's intern program across three cohorts — onboarding, project matching, and mentorship.
Communications
Division newsletter — 3 years
Wrote and produced the monthly newsletter for my Mastercard division, Shared Components & Security Solutions (SCSS), for three years.
Leadership
Communications Lead, Young Professionals BRG
Led communications for the Young Professionals Business Resource Group across a two-year term.
Civic
HOA Treasurer — 1 year
Served a year as treasurer for my homeowners' association, owning the books and the budget.
Pro bono
Strategy Consultant — Forest ReLeaf of Missouri
Through Washington University's Taylor Community Consulting Program, built a long-term growth strategy for the nonprofit native-tree nursery — refocusing its priorities and delivering a value proposition, outreach initiatives, and an execution plan.
Side projects

Building and learning, out loud.

I'd rather learn a new tool by shipping with it than reading about it. Right now that means going deep on AI and the technical fundamentals underneath it.

In progress

CS50x — Harvard's intro to computer science

Going to the source for CS fundamentals — building the fluency to work shoulder-to-shoulder with engineers and reason about what's actually buildable.

Self-paced · finishing it
Building

An AI concierge for a new city

A suite of apps — SF Eats & Drinks, Events, Activities, Lodging, and Be A Local — that turns the job of a tour guide, social planner, and personal assistant into an interactive menu you order from. Built to learn AI hands-on, and to find my way around a new home.

Personal project · San Francisco
Starting

Mariah Brunner's 30-Day AI Challenge

A structured month of building with AI every day — deliberate reps to sharpen the craft and stay on the front edge of the tooling.

Enrolled · kicking off

Think we'd work well together?

Let's talk

You don't need the perfect role in mind to reach out.

Some of the best conversations I've had started with someone saying "I'm not totally sure what I need yet — but something's missing."

That's enough. Let's start there.