Staff UX Researcher · Seattle, WA
Marcos
Nunes-Ueno
I design research to fit the question, not the other way around.
My strengths are in designing research to diagnose and fix root causes, not just treat symptoms. There is pressure for teams to optimize for speed — shipping fixes quickly and often, before fully understanding what's causing the problems. I help teams slow down at the right moment: identify where the problem is occurring, pinpoint the why, and diagnose the true cause. Only then do we move to designing the right solution. Twenty+ years of doing this across Google, Microsoft, Amazon, Meta Reality Labs Research, and two Berlin startups.
20+
Years in UX Research
7
Companies from startups to FAANG
2
Research practices built from zero
6
Countries, three continents of field research
Featured Case Studies
Bespoke research design for complex problems
Meta Reality Labs Research · 2024-2025
Adversarial Input Modality Evaluation
Designed a statistically rigorous study comparing three hand-tracking input modalities under deliberately engineered failure conditions. Research directly informed a VP-level hardware commit decision for next-generation smart glasses.
Meta Reality Labs Research · 2023-2024
AI Agent Framework Research
Led a two-phase generative study that invalidated an existing user archetype model and replaced it with a role-based AI agent framework adopted across multiple product teams.
Meta Reality Labs Research · 2024
AI Device Competitive Research Program
Co-developed a longitudinal competitive research program to evaluate emerging AI devices across the full user journey. Cut through launch hype to identify where experiences break during sustained daily use.
GetYourGuide · 2018-2019
Diagnostic Conversion Optimization with RITE
Introduced RITE methodology to diagnose the root cause of a mobile checkout conversion gap, redirecting the team from a premature fix to evidence-based problem identification.
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“Speed only measures rate of movement. It says nothing about direction. Velocity is speed with direction. Research provides the direction.”