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Juan Fernandez

@juanfernandez

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Senior Product Designer at Airtm who designed its EURC multi-currency wallet and local virtual accounts.

Brazil

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What I'm looking for

Senior product design role, fully remote from Brazil (UTC−3). I'm at home in fintech, payments and complex B2B: I designed Airtm's multi-currency wallet and cut Walmart Marketplace's pricing case time from 12 days to 2. I prototype in code with AI and work close to engineering. Open to full-time via EOR or contractor, paid in USD.

At Airtm, I designed the core EURC multi-currency wallet experience, including wallet navigation and conversion flows. I also owned the design of local virtual accounts for Colombia, Mexico, and Brazil, using a shared architecture with country-specific onboarding and account details.

At Formula.Monks, I designed Pricing Room for Walmart Marketplace, a workflow for investigating offers unpublished by pricing rules. In a review three months after the MVP, the project recorded average resolution time falling from 12 to 2 days and escalations from 27% to 19% as cross-functional team outcomes.

Across product work at Creditas, Banco Inter, and Blip, I designed mobile, web, and conversational experiences from discovery through delivery. I connect user research and information architecture with interaction design, design systems, and engineering collaboration.

Experience

Work history, roles, and key accomplishments

Senior Product Designer

Airtm

Dec 2025 - Sep 2026 (9 months)

Designed the core EURC multi-currency wallet experience, including wallet navigation and conversion flows. Owned the design of local virtual accounts for Colombia, Mexico and Brazil, and delivered a shared web navigation framework with React components.

Product Design Wallet Design Multi Currency React Design Systems Prototyping AI Assisted Prototyping

Design Lead and Product Designer

Aimana.ai

Jan 2024 - Dec 2025 (1 year 11 months)

Established a discovery and design process for AI product engagements. Facilitated client workshops on journeys, OKRs, and product opportunities.

Product Design Design Leadership Discovery Workshops OKRs AI Products

Senior Product Designer

Formula.Monks

Apr 2024 - Oct 2025 (1 year 6 months)

Designed Pricing Room for Walmart Marketplace, a unified workflow for investigating offers unpublished by pricing rules. Partnered with product managers, engineers, and the design-system team from discovery through handoff and staging QA.

Product Design Workflow Design Design Systems Prototyping Cross Functional Collaboration Discovery QA

Senior Product Designer

Cactus

Sep 2023 - Apr 2024 (7 months)

Designed healthcare product experiences from research through delivery. Contributed to team rituals, mentorship, and reusable interface patterns.

Product Design Healthcare Research Design Systems Mentorship

UX/UI and Figma Instructor

Coderhouse

May 2022 - Apr 2024 (1 year 11 months)

Taught classes of more than 40 students in UX/UI and Figma.

Teaching UI UX Figma

Senior Product Designer

Creditas

Apr 2022 - Sep 2023 (1 year 5 months)

Redesigned the Creditas app around the products each customer holds, including a personalized home and clearer paths to act. Designed benefits-card and loan journeys on mobile and web, and card delivery tracking with delivery estimates.

Product Design Mobile Design Web Design Discovery A B Testing User Research Conversion Rate Optimization

Senior Product Designer

Banco Inter

Sep 2021 - Apr 2022 (7 months)

Designed a native help-center experience with search, guided content, and a route to support, replacing the webview experience.

Product Design Help Center Search Content Design Native App

Product Designer

Blip

Nov 2019 - Sep 2021 (1 year 10 months)

Designed platform and enterprise conversational experiences through research, user flows, and testing. Defined UX-writing guidance and experience metrics.

Product Design Conversational Design User Research User Flows UX Writing Metrics