Open to new projects

Design, code
& AI.

Senior Product Designer for over a decade, creating digital products across finance, education, retail, and artificial intelligence. Based in São Paulo, Brazil.

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Product Design UX Research Design Engineering Design Systems AI Workflows Frontend Figma LLMs Mobile · Web Fintech AI

Portfolio

Selected projects · 2024 — 2026

About

Product designer,
with a foot in code.

I have been a Product Designer for over a decade, working across finance, education, retail, and artificial intelligence. I started as a UI Designer and Front-end Developer and never left code behind - today, that lets me move from wireframe to production interface without losing fidelity.

As a Senior Product Designer at Raro Labs and in recent projects for Banco BMG, I lead work from research and validation to pixel-perfect UI, with data-informed design. My approach combines deep research, advanced prototyping, and applied AI - using LLMs, agents, and MCPs as a creative layer in the process.

Figma Adobe XD React JavaScript Python HTML / CSS Tailwind Shadcn LLMs Claude / GPT N8N LangChain Vibe Coding AI-Assisted Engineering AI Agents Cloud Native Applications Vercel & Railway Deployments
Portrait of André Cesarini

Experience

2022 - present

Senior Product Designer

Raro Labs · São Paulo

ProductResearchDesign Systems

2025

Product Designer

Banco BMG · Product showcases

UX / UISEOConversion

2018 - 2021

Senior Product Designer

Lerosa Investimentos · Finance

UX / UIFintechProduct

2015 - 2018

UI / UX Designer

LUZ Publicidade · Multiple clients

UIBrand

2014 - 2015

UI Designer · Front-end Dev

Cria Editora

UIFrontend

2012 - 2014

UI Designer · Front-end Dev

UOL EdTech · Educational platforms

UIEdTechFrontend

What I do

01

Product Design

Product ownership from strategy to delivery - information architecture, flows, pixel-perfect UI, and design system maintenance.

02

UX Research

Qualitative and quantitative research, interviews, usability testing, and synthesis into actionable insights. Data-informed decision-making.

03

Design Engineering

Faithful translation from Figma to code - React, HTML, CSS, and JavaScript. Reusable components and absolute design fidelity.

04

Design Systems

Building and maintaining scalable libraries - tokens, components, and patterns that support product and brand.

05

AI Workflows

Integrating LLMs, agents, and MCPs into the creative process. Creator of the Promptus plugin and builder of Skrev.

06

Growth & Conversion

Funnel optimization, bounce-rate reduction, Core Web Vitals improvement, and conversion-rate growth - design as a real lever.