Locaweb's Customer Center, where customers pay invoices, change plans and reach their other products. After the redesign, each action takes under 1 minute.
Product Designer, Brazil
I design interfaces based on what research shows, and I maintain the system behind the product
I'm Gui Domingues. I've worked in user research and in web and mobile interfaces, and today I work where the two meet: understanding why people come back to a product (or stop coming back) and turning that into design decisions.
I've worked on B2B platforms and loyalty programs, and I maintain an open-source design system on GitHub.
I stay with the project through the developer handoff and keep tracking its metrics after it goes live.
Selected work
The new Clube KTO cashback, which returns 1% to 7% of each week's losses depending on the player's tier. Leadership approved the proposal, with an estimated return above 100%.
King App
03KingHost's app, where customers pay invoices, keep track of their services and contact support. It reached the app stores in 5 months and has a 5-star rating.
Process
- 01
Discovery
Before opening Figma, I talk to the business and to the people who use the product, and I look at the data that already exists.
User research - 02
Definition
With what I learned, I decide which problem to solve first and why.
Prioritization - 03
Build
I design the solution together with the components that support it, and I test early with the people who will use it.
Prototyping and testing - 04
Monitoring
After launch, I track real usage metrics. They show what to improve next.
Metrics analysis
Projects
After a long time working for clients and stakeholders, I decided to be my own client.
On these projects I handle the planning and the code, and I take each one through to launch.
- 01
AL Design System
A Design System I maintain, open to the community. I keep improving it and ship new versions often. It's the foundation of this site.
- 02
Design Skill
Instructions that organize the design process inside an AI, built for Claude and adaptable to others. An orchestrator picks the right specialist for each design stage.
Contact
Shall we talk?
Available for Product Design and UX roles, including remote. If you have an open position or want to talk about a project, send me an email.
guilherme.ddworakowski