EXPERIENCE

Qualitative depth, mixed-methods judgment and evidence systems for complex products.

My background in communication, editorial design and academic research shapes how I investigate user behavior, connect evidence to business decisions and communicate complex findings clearly.

I connect user needs, product decisions and business goals.

I’m a Senior UX Researcher with six years of experience across fintech, payments, media and marketplaces, working with teams in Brazil, the US and Europe.

I help teams challenge assumptions, identify what they need to learn and turn research evidence into product opportunities and actionable recommendations. My work combines exploratory and evaluative research, including qualitative interviews, moderated and unmoderated usability testing, concept evaluation, surveys and behavioral data.

I also develop research systems, structured documentation and AI-assisted workflows to make evidence easier to organize, verify and reuse.

My background in communication, editorial design and academic research shapes how I approach language, organize complex information and communicate findings. I hold a master’s degree in Social Memory and Cultural Heritage. I’m also autistic.

Karla Simões seated in her home office.

Selected experience

2024–2026

Trustly

Senior UX Researcher

Global fintech specializing in open banking and Pay by Bank payments.

Led end-to-end research across international Pay by Bank experiences, partnering with Product, Design and Data to investigate user needs, evaluate payment journeys and inform product decisions.

Reframed a wording request into mixed-methods research on customer expectations during bank authentication. Combined cross-market interviews with a stated-preference survey to identify what the experience needed to communicate, informing a design direction evaluated in production testing.

Turned visual preference into shared design criteria through moderated concept and prototype evaluations, identifying signals of legitimacy, readiness and control that informed Trustly’s new global design system.

Led a competitive usability benchmark comparing bank-linked payment experiences through unmoderated think-aloud prototype testing and perception ratings. Identified how familiarity with online banking shaped perceived trust and security, informing priorities for the payment experience.

2021–2024

Globo

UX Researcher

Major Brazilian media group with digital news, entertainment and content platforms.

Conducted qualitative and mixed-methods research connecting audience behavior, motivations and routines to questions about segmentation, personalization and content discovery.

Challenged the plan to turn five g1 engagement segments into five personas. Qualitative interviews revealed different needs and motivations within the same behavioral groups, redirecting the investigation toward segmentation enrichment with candidate variables for Data Science.

Combined behavioral navigation clusters, qualitative interviews and longitudinal diary studies to understand how context and routines shaped content consumption, helping develop hypotheses for personalization and navigation.

2020–2021

iFood

UX Researcher

Brazilian food delivery marketplace connecting consumers, restaurants and delivery partners.

Conducted exploratory and evaluative research across consumer, restaurant-partner and delivery-partner experiences.

Identified five food-choice heuristics through exploratory consumer interviews, showing how appetite, time, effort and cost shaped decisions. The findings informed opportunities to make discounts and value-for-money options easier to identify, improve restaurant comparisons and strengthen social proof in the ordering experience.

Designed and conducted exploratory research with delivery partners, combining narrative interviews, cultural probes and structured exercises to investigate autonomy, safety, income predictability and support needs.