Rancés Sánchez
About me
Let's know each other more.

Experience
10 years
building products
Impact
200M+
users reached
Based in
Brazil
working globally
Rancés Sánchez
About me
Let's know each other more.

Experience
10 years
building products
Impact
200M+
users reached
Based in
Brazil
working globally
Who am I ?
The essence
I’m Rances Sanchez, a Senior 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.
Who am I ?
The essence
I’m Rances Sanchez, a Senior 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.
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.





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.

Start a conversation
Let’s design what’s next with intention
Prometeux partners with ambitious teams to design digital products that scale, perform, and endure.

prometeux
Strategic Product Design
Designing clarity at the intersection of business, technology, and human experience.
Featured Projects
Insights & Updates
Occasional thoughts on product, design, and systems.
Enter your email...
Let’s build what truly deserves to exist
Designed with intention
© 2026 Prometeux

Start a conversation
Let’s design what’s next with intention
Prometeux partners with ambitious teams to design digital products that scale, perform, and endure.

prometeux
Strategic Product Design
Designing clarity at the intersection of business, technology, and human experience.
Featured Projects
Insights & Updates
Occasional thoughts on product, design, and systems.
Enter your email...
Let’s build what truly deserves to exist
Designed with intention
© 2026 Prometeux
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.

Start a conversation
Let’s design what’s next with intention
Prometeux partners with ambitious teams to design digital products that scale, perform, and endure.

prometeux
Strategic Product Design
Designing clarity at the intersection of business, technology, and human experience.
Featured Projects
Insights & Updates
Occasional thoughts on product, design, and systems.
Enter your email...
Let’s build what truly deserves to exist
© 2026 Prometeux · Designed with intention