Rancés Sánchez Sánchez

Rancés Sánchez Sánchez

Product Designer

I turn complex user and business challenges into scalable digital products, bridging strategy, design, and technology to drive measurable outcomes.

I turn complex user and business challenges into scalable digital products, bridging strategy, design, and technology to drive measurable outcomes.

Experience

10 years

building products

Impact

20M+

users reached

Based in

Brazil

working globally

Who am I ?

The essence

I’m Rances Sanchez, a Product Designer with 10 years shaping web, mobile, and SaaS products across Brazil, Latin America, and the United States. I lead products from ambiguity to clarity, aligning strategy, design, and execution to deliver scalable solutions with measurable business impact.

Experience

Practice

First Tech

2022 - 2025

Product Engineer

Designed and scaled security-critical and payment products for high-volume, regulated environments. Working across strategy, UX, and engineering, I transformed complex operational and governance flows into clear, reliable systems, reducing ambiguity and enabling faster, better decision-making.

Freelance

2020 - 2022

Product Designer

Partnered with U.S.-based companies to design and launch web and mobile products across services, logistics, marketplaces, and proptech. I led projects end-to-end, from discovery to delivery, with a strong focus on clarity, conversion, and scalable execution.

Civil Aeronautics Institute

2019 - 2020

Product Designer

Contributed to digital systems supporting aviation operations in highly regulated contexts. This work strengthened my systems thinking, precision in design, and commitment to safety, documentation, and long-term sustainability.

Havana International Airport

2017 - 2019

UX/UI Designer

Designed interfaces and operational tools for airport workflows where usability directly impacted safety and efficiency. The experience demanded clarity under pressure and close collaboration with technical and operational teams.

Built on trust ... validated by results.

What my colleagues, partners, and clients say about working with a product designer who connects user needs, business objectives, and delivery.

The Story Behind

A little bit more about me

My path into product design didn’t begin with interfaces, it began with systems, constraints, and environments where things had to work without margin for error. I worked in aviation, regulated infrastructures, and large-scale payment ecosystems, projects where usability directly impacts trust, safety, and continuity. In those contexts, I learned that clarity isn’t a visual choice, it’s a responsibility.


Design became my way of navigating complexity. I was drawn to what happens beneath the surface: how technical decisions shape behavior, how strategy becomes experience, and how small design choices can scale across entire systems. Over time, this perspective naturally placed me at the intersection of design, engineering, and business, working end-to-end to turn ambiguity into direction and direction into outcomes.


My journey has moved between mission-critical platforms and fast-moving commercial products, between strict regulation and creative exploration. That contrast shaped how I think today, with long-term perspective, grounded in execution. I care about products that scale without losing clarity, and experiences that feel simple while remaining structurally sound.


Alongside my professional work, I pursued a PhD in Computer Systems Engineering at the University of São Paulo. This path strengthened my analytical rigor and reinforced a research-driven approach to decision-making, helping me design systems meant to endure, not just launch.


Outside of work, I’m guided by curiosity and quiet observation. I find clarity in moments of focus and reflection, and those moments shape how I design: with intention, patience, and respect for both people and systems. At the core of my work is a simple principle:

When complexity is unavoidable, the strategy becomes the product and the results become the proof.

Get in Touch

Let’s turn complex problems into meaningful digital products.

Whether you’re exploring a new product, refining an existing experience, or looking for a design partner who understands both business and technology, Prometeux is open to meaningful conversations. Every collaboration starts with understanding the challenge, not with assumptions.

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Email: For detailed and strategic conversations

Ideal for project briefs, proposals, and long-term collaborations.

Scan this QR code or click on it to compose and send an e-mail to my Gmail account.

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Prometeux partners with ambitious teams to design digital products that scale, perform, and endure.

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Strategic Product Design

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