JULIA

2K26

./ portfolio

End-to-end product design, from research to delivery

SASAKI

JULIA SASAKI

Timeless Visual Stories for Legendary Brands

Five years designing digital products, from platforms used by millions to e-commerce and landing pages. Different scales, same work: making it clear.

Photo-of-the-Designer

I'm Júlia Sasaki. I start from the problem rather than the screen: how people actually use a product, what gets in their way, and what the business needs from it. Everything else follows from that.

My practice covers the whole process rather than one slice of it: discovery and user research, information architecture and user flows, prototyping and usability testing, design systems and interface, UX writing, content strategy and accessibility, through to handoff with engineering. I work with product data directly, use AI across the process, and design in Portuguese, English, Spanish and Japanese.

Based in São José dos Campos, Brazil

A selection of projects across different products, industries and team setups. Each one shows the thinking behind the work, not only the final screens.

Mercado LivreFARM RioGrupo SOMADevSquad

what i do

"Design is not just what it looks like and feels like. Design is how it works."

01 ——

End-to-End Product Design

I take a problem from discovery to delivery: framing what is actually going wrong, mapping the journey, designing the flows, and handing them over ready to build.

Problem Framing

User Flows & Journeys

Information Architecture

High-Fidelity Prototyping

02 ——

UX Research & Product Data

Research is not a phase I hand off. I run interviews and usability tests, and I query product data myself to check whether what people say matches what they actually do.

User Interviews

Usability Testing

A/B Testing

SQL & Product Analytics

03 ——

Design Systems & Interface

I design in systems rather than screens, building components, icon libraries and the guidelines that let other teams use them consistently across markets.

Component & Icon Libraries

Visual Guidelines

Accessibility

Engineering Handoff

04 ——

Content Strategy & UX Writing

Much of what makes a financial product understandable is language. I structure and write the content, then adapt the tone to each market it ships in.

UX Writing

Narrative & Storytelling

Localisation & Tone of Voice

Information Hierarchy

05 ——

AI in the Design Process

I use AI across the whole process, from analysing product data and exploring solutions to delivering handoff with the front-end already coded.

Research & Data Analysis

Solution Exploration

Generative Imagery

Coded Handoff

JULIA SASAKI

julianatsasaki@gmail.com

Email copied!

São José dos Campos, SP Brazil

Copyright © 2026 Julia Sasaki

JULIA

2K26

./ portfolio

End-to-end product design, from research to delivery

SASAKI

JULIA SASAKI

Timeless Visual Stories for Legendary Brands

Five years designing digital products, from platforms used by millions to e-commerce and landing pages. Different scales, same work: making it clear.

Photo-of-the-Designer

I'm Júlia Sasaki. I start from the problem rather than the screen: how people actually use a product, what gets in their way, and what the business needs from it. Everything else follows from that.

My practice covers the whole process rather than one slice of it: discovery and user research, information architecture and user flows, prototyping and usability testing, design systems and interface, UX writing, content strategy and accessibility, through to handoff with engineering. I work with product data directly, use AI across the process, and design in Portuguese, English, Spanish and Japanese.

Based in São José dos Campos, Brazil

A selection of projects across different products, industries and team setups. Each one shows the thinking behind the work, not only the final screens.

Mercado LivreFARM RioGrupo SOMADevSquad

what i do

"Design is not just what it looks like and feels like. Design is how it works."

01 ——

End-to-End Product Design

I take a problem from discovery to delivery: framing what is actually going wrong, mapping the journey, designing the flows, and handing them over ready to build.

Problem Framing

User Flows & Journeys

Information Architecture

High-Fidelity Prototyping

02 ——

UX Research & Product Data

Research is not a phase I hand off. I run interviews and usability tests, and I query product data myself to check whether what people say matches what they actually do.

User Interviews

Usability Testing

A/B Testing

SQL & Product Analytics

03 ——

Design Systems & Interface

I design in systems rather than screens, building components, icon libraries and the guidelines that let other teams use them consistently across markets.

Component & Icon Libraries

Visual Guidelines

Accessibility

Engineering Handoff

04 ——

Content Strategy & UX Writing

Much of what makes a financial product understandable is language. I structure and write the content, then adapt the tone to each market it ships in.

UX Writing

Narrative & Storytelling

Localisation & Tone of Voice

Information Hierarchy

05 ——

AI in the Design Process

I use AI across the whole process, from analysing product data and exploring solutions to delivering handoff with the front-end already coded.

Research & Data Analysis

Solution Exploration

Generative Imagery

Coded Handoff

JULIA SASAKI

julianatsasaki@gmail.com

Email copied!

São José dos Campos, SP Brazil

Copyright © 2026 Julia Sasaki

JULIA

2K26

./ portfolio

End-to-end product design, from research to delivery

SASAKI

JULIA SASAKI

Timeless Visual Stories for Legendary Brands

Five years designing digital products, from platforms used by millions to e-commerce and landing pages. Different scales, same work: making it clear.

Photo-of-the-Designer

I'm Júlia Sasaki. I start from the problem rather than the screen: how people actually use a product, what gets in their way, and what the business needs from it. Everything else follows from that.

My practice covers the whole process rather than one slice of it: discovery and user research, information architecture and user flows, prototyping and usability testing, design systems and interface, UX writing, content strategy and accessibility, through to handoff with engineering. I work with product data directly, use AI across the process, and design in Portuguese, English, Spanish and Japanese.

Based in São José dos Campos, Brazil

A selection of projects across different products, industries and team setups. Each one shows the thinking behind the work, not only the final screens.

Mercado LivreFARM RioGrupo SOMADevSquad

what i do

"Design is not just what it looks like and feels like. Design is how it works."

01 ——

End-to-End Product Design

I take a problem from discovery to delivery: framing what is actually going wrong, mapping the journey, designing the flows, and handing them over ready to build.

Problem Framing

User Flows & Journeys

Information Architecture

High-Fidelity Prototyping

02 ——

UX Research & Product Data

Research is not a phase I hand off. I run interviews and usability tests, and I query product data myself to check whether what people say matches what they actually do.

User Interviews

Usability Testing

A/B Testing

SQL & Product Analytics

03 ——

Design Systems & Interface

I design in systems rather than screens, building components, icon libraries and the guidelines that let other teams use them consistently across markets.

Component & Icon Libraries

Visual Guidelines

Accessibility

Engineering Handoff

04 ——

Content Strategy & UX Writing

Much of what makes a financial product understandable is language. I structure and write the content, then adapt the tone to each market it ships in.

UX Writing

Narrative & Storytelling

Localisation & Tone of Voice

Information Hierarchy

05 ——

AI in the Design Process

I use AI across the whole process, from analysing product data and exploring solutions to delivering handoff with the front-end already coded.

Research & Data Analysis

Solution Exploration

Generative Imagery

Coded Handoff

JULIA SASAKI

julianatsasaki@gmail.com

Email copied!

15 Queensberry
South Kensington
London SW7 2EA,
United Kingdom

Copyright © 2026 Julia Sasaki

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