Cássio Prates

Digital product design with real impact. Through systemic vision and human leadership, I build scalable solutions that respect the people who use them, the people who build them, and the world around us.

Cases

My most recent projects

  • Preview of the Geekie One case at Arco Educação

    Edtech @ Geekie

    National-scale education with AI and accessibility

    View case
  • Preview of the Relatório 360 case — Arco Educação pedagogical dashboard

    Edtech @ Arco

    Pedagogical dashboard with 71.8% top satisfaction in 656+ responses

    View case
  • Preview of the Wildlife Studios case — Colorfy

    Games @ Wildlife

    Interfaces that delight millions in global consumer games

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Testimonials

What people say about my work

Sofia Silva

Sofia Silva

Product Manager

Beyond a relentless focus on user experience, he brings a rare sensitivity to question the 'why' behind every solution.
Gabriel Guilhoto

Gabriel Guilhoto

Software Engineer

In addition to demonstrating excellence and efficiency in design, Cássio is skilled at navigating engineering constraints to arrive at solutions that balance user experience with technical feasibility.
Larissa Melo

Larissa Melo

Product Designer

His human-centered leadership, focused on supporting and developing people, always gave me confidence to grow both professionally and personally.
Glauco Villas Boas

Glauco Villas Boas

Senior Software Engineer

One of Cássio's greatest strengths is his ability to turn abstract product discussions into clear, feasible decisions that are well-aligned with real engineering constraints, helping the team make faster and safer decisions.
Danniel Carvalho

Danniel Carvalho

Senior Engineering Manager

What impressed me most was the way he conducts ideation and validation interviews. Working alongside him made me realize that real UX starts long before the prototype.
Mateus Anjos

Mateus Anjos

Tech Lead | Fullstack Engineer

He turns complex ideas into clear, functional, high-impact solutions. He always backs his decisions with facts and data, transparently explaining the reasoning behind each choice.
Diogo Malheiros Jerez

Diogo Malheiros Jerez

Group Product Manager

Cássio combines technical competence with a strong empathetic perspective. He navigates even the most ambiguous environments with calm and focus, always giving me confidence that we'd arrive at an excellent solution.
Karina Somers Lopes

Karina Somers Lopes

Lead Product Designer

Cássio is a design reference. He led countless design sprints with diverse professional profiles to conceive a brand new product.
Carolina Giacomin

Carolina Giacomin

UX/UI & Product Designer

He has an incredible sensitivity for product moments and delivers design proposals that are right on point for each one.
Humberto Gouveia

Humberto Gouveia

Senior QA Engineer

He is an extremely talented designer with a sensitive and sharp eye for detail, user experience, and the purpose behind every solution.
Melissa Tsuzuki

Melissa Tsuzuki

Product Designer

Cássio is a leader who demonstrates a genuine commitment to professional growth. His care for user experience results in solutions that are intuitive, engaging, and well-executed from start to finish.
Leonardo Melo

Leonardo Melo

Staff Product Designer

Cássio is a great professional — highly attentive to project details and always a go-to resource for complex problems.
Aline Paffaro

Aline Paffaro

Principal Product Designer

He is an energetic, easygoing, and wonderful person. He understands his own limitations and keeps working hard to improve — resilient, creative, and always pushing forward.

Does this resonate?

Then let's talk! I like to start with an open conversation — to understand who you are, what drives you, what you're building.

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