Fernanda Mujica

Fernanda Mujica

UX Research Leader | Service Design Strategist | 10+ Years

Over 10 years of experience turning conversations into insights and insights into impact.

UX Researcher for two Unicorn Startups, led an award-winning Service Design agency, and now Senior Researcher at Brazil's most valuable brand, Nubank.

My approach is deeply human-centered yet strategy-driven: understanding what people need and making it measurable.

BrazilianDog loverMystery readerFortnite player

"I speak the language of customers, product, and design"

Professional Journey

2022–Present
Nubank
Senior UX Researcher & Design Hub Lead
2020–2022
Take Blip
Senior UX Researcher
2019–2021
Wiz.Co
Senior Service Designer
2013–2018
Avocado Design
Founder & Service Designer
Brazil — Available for remote work and relocation

Skills and Competencies

Research & Methods

Mixed-MethodsGenerative ResearchEvaluative ResearchResearch RoadmappingFocus GroupsUsability TestingA/B TestingMarket Research

Quantitative & Strategy

MaxDiff ScalingConjoint AnalysisSurvey DesignCustomer SegmentationMarket SizingNPS / CSAT / CESStatistical ModelingSean Ellis Score

Leadership & Operations

Research OpsTeam LeadershipStakeholder ManagementTraining & MentorshipAgile MethodologiesScrum / KanbanService DesignProduct Management

AI & Technology

AI/ML Data AnalysisPrompt EngineeringFigmaDovetailQualtricsQuestionProMiro / MuralCursor / Make

Education

AI for Designers - Long Course

Interaction Design Foundation

Master of Strategic Design Labs and Service Design

Instituto Europeu de Design Madrid, Spain

Technology & Smart Cities

FGV - Fundação Getúlio Vargas

Bachelor in Social Communication, Advertising

Universidade de Brasília (UnB)

Impact in Numbers

Research-driven results that transformed user experiences

$2B

Revenue generated in 3 months after One-Click launch

MY ROLE Mixed-methods research, competitive benchmarking and UX guidelines to reduce funnel abandonment

Over 1.2 million users transferred funds with a single tap, simplifying their financial operations

75%+

CSAT in products with 7M+ monthly active users

MY ROLE Sizing and segmentation research for three key products and metrics definition

Millions of customers experienced improved satisfaction through research-optimized features

CES 3→5

Customer Effort Score improvement through friction research

MY ROLE Usability and friction reduction research to increase ease of use

500,000+ B2B users experienced easier platform navigation and reduced operational friction

+23% SUS

98/112 improvements executed in PPW platform

MY ROLE Friction mapping, backlog prioritization and complete journey analysis

5 major banks successfully adopted the platform after usability enhancements

−20%

Churn reduction at authorization funnel with bank suggestions

MY ROLE Behavioral research and A/B testing to optimize authorization funnel

Millions of authorization attempts succeeded, preventing frustration at critical moment

+10%

CSAT in Open Finance after action plan implementation

MY ROLE Mixed-methods research on behavior, pain points and opportunities

24 million consent connections established, leading Brazil's Open Finance adoption

In Action

Facilitating workshops, presenting insights, and collaborating with teams

Presenting Custom Research Notebook at conference
Outdoor team workshop with design boards
Leading workshop session
Facilitating design thinking
Entrepreneurship event
Collaborative workshop
Professional workshop

How I Think

My Research Process

1

UNDERSTAND

Problem, team needs, specific questions, business objectives, context and constraints.

2

EVALUATE

Previous issues with product/service, research history, existing data to avoid duplication.

3

DEFINE

Who to consult (segments, personas), ideal groups, recruitment, timeline and budget.

4

COMBINE METHODS

Quantitative or qualitative, sizing, behavioral, mixed-methods as needed.

5

PLAN STRATEGY

Detailed research plan, tools, timelines, deliverable formats, presentation structure.

6

CREATE ANALYSIS MAP

What to cross-reference, framework to answer questions, success metrics.

7

VALIDATE WITH TEAM

Sessions with PM, Designer, Engineering. Validate technical feasibility, align product strategy, ensure design conception.

Case Studies

Research methodologies that drove measurable business outcomes

One-Click Transfer: $1.8B in 3 months

3.5 million users impacted

Challenge:

65% drop-off at bank selection screen; UX inferior to competitor (Mercado Pago)

$1.8B
Revenue
Jun-Aug 2025
65% → 20%
Drop-off reduction
At bank selection
3.5M
Users impacted
Improved experience

PPW Platform: 112 Friction Points Mapped

98 improvements executed | +23% SUS Score

Challenge:

112+ friction points preventing partners from serving home equity customers efficiently

112
Friction points
Identified & mapped
98
Improvements
87.5% execution rate
+23%
SUS Score
Usability improved

Credit Card Aggregation Feature Discovery

7M+ users with consolidated credit card view

Challenge:

How can we use Open Finance credit card data to deliver a feature customers will actually use daily?

72.5%
SUS Score
MVP design
58%
Daily usage intent
Users interested
7M+
Users impacted
Consolidated view

Open Finance Adoption & Multi-Banking Strategy

24M Open Finance consents | 99% confidence | 3% margin of error

Challenge:

Why do customers use multiple banks, and how can Open Finance help Nubank become their primary account?

2,801
Respondents
99% confidence
68%
Open Finance awareness
Market leadership
23.5pp
Opportunity gap
Conversion potential

AI Design

I leverage AI throughout my research process to enhance efficiency and depth. I use AI to connect stakeholders before research, and to Design and create tools.

A complete end-to-end prompt library with best practices for every part of your research

Leadership Experience

Building and guiding high-performing design and research teams

Team Collaboration

Fernanda at work
Presenting research insights at Nubank
Design workshop with team

Mentorship & Testimonials

Empowering teams through knowledge sharing and guidance

"Fernanda's mentorship helped me reduce research time drastically by teaching me to choose only the necessary methodologies. Now our team applies research with realistic timelines and gets actionable insights faster."

Lucas Borges

Product Designer

"I'm entering the UX Research world, and Fernanda provided invaluable guidance on evaluating what's feasible and interesting for clients. She helped me focus on what would truly impact the product and delight users."

Fernanda Ribeiro

UX Researcher

Leadership Journey

Avocado Design

Service Designer & Founder

2013–2018

  • Led team of 11 designers
  • Managed career development and professional growth pathways
  • Allocated projects based on skills and development goals
  • Established quality delivery standards for 150+ clients
  • Founded and built agency from ground up to success

Take Blip

Senior UX Researcher

2020–2022

  • Supported 7 product squads
  • Created comprehensive Research Ops structure and methodology
  • Mentored Product Designers on research integration
  • Optimized participant recruitment across company
  • Led internal training programs on research methods

Nubank

Design Hub Lead & Senior UX Researcher

2022–Present

  • Leading 7 platform designers
  • Manage cross-platform research projects with strategic focus
  • Track and improve design satisfaction metrics
  • Promote research and design excellence across initiatives
  • Drive executive-level product strategy decisions

Articles & Insights

Thoughts on user research, AI, and the craft of understanding people

⏱️ 5 Minutes or 5 Weeks? How to Know If You REALLY Need to Do User Research using AI

⏱️ 5 Minutes or 5 Weeks? How to Know If You REALLY Need to Do User Research using AI

A practical guide to deciding when to invest in full user research versus using AI tools for quick insights.

Please Pick Up the Phone! It Might Be Me

Please Pick Up the Phone! It Might Be Me

That's when I remembered how much we underestimate the simple stuff. Sometimes, the best insights come from the most unexpected place.

UX Research Wrapped 2025

Thank You

I appreciate your time and consideration. I'm passionate about research that drives meaningful product decisions and excited about potential collaboration.

Available For

Relocation
Full-time
Part-time
Consulting
Leadership Roles

Contact Information

Get in Touch →