Guilherme Kerber
Open to Work · 2026

I'm Guilherme Kerber, a Senior Product Designer crafting digital experiences from Brazil for the world.

Designing thoughtful experiences that balance business goals, user needs, and visual precision.
23.5505° S
46.6333° W
Porto Alegre · BR
01 · Artificial Intelligence

Designing an AI
Front Desk for
Photographers

AI Agent Automation SaaS

An AI agent that reads inbound inquiries, replies and negotiates in the photographer's own tone and rate card, and books confirmed sessions straight onto the calendar, so the photographers spend less time on admin and more time shooting.

Aperture AI agent dashboard cover
Staking marketplace in a crypto wallet
02 · Fintech

Introducing a Staking Marketplace
to a Multi-Chain Wallet

Product Design Crypto Fintech iOS

A bid market for delegated stake, built into a multi-chain crypto wallet. Delegators post what they hold and node operators bid commission terms against it.

03 · Fitness & Health

Designing a
Cross-Platform
Coaching Experience

Product Design Mobile Desktop

Desktop redesign + mobile MVP for a remote fitness coaching platform, connecting trainers and students when in-person sessions were no longer possible.

Fitness coaching platform cover

In Web3

Credit market for multi-chain Cardano wallet [ 2025 ]

Creating a new credit market experience on a well known crypto wallet.

Orderbook trading platform [ 2025 ]

Creating a new orderbook experience for traders on a well known crypto wallet.

Koncepted web3 rebrand [ FOR KONCEPTED ][ 2022 ]

Helping Koncepted rebrand themself to a design studio specialized in web3.

In Gaming

Forum.AI agents for gaming NPCs [ FOR KONCEPTED ][ 2025 ]

Landing page and product MVP to an agentic tool that creates smart NPCs for games.

Novus training platform [ FOR KONCEPTED ][ 2020 ]

A training platform for Fortnite gamers, making players level up their skills.

Gamercraft tournament platform [ FOR KONCEPTED ][ 2019 ]

League of Legends tournament platforms with player toxicity control and custom tournaments.

In SaaS

Blog and Social media channel for 46graus [ 2018 ]

New feature connected to 46graus website builder that allow photographers to share all their social content.

In-house store platform for 46graus [ 2017 ]

New feature connected to 46graus website builder that allow photographers to sell their services and goods.

Mobile to-do app for iOS and Android [ FOR KONCEPTED ][ 2024 ]

Making tasks fun and rewarding for your day-to-day life tasks.

Senior Product Designer with 15+ years of experience designing complex digital products across Fintech, SaaS, AI, and Gaming.

Product Strategy
& UX Structure

[ 01 ]

Before starting any project, I like to run stakeholder interviews to understand the business and user goals behind it. From there I define the overall structure and the minimum requirements that make the product viable. Only then do I move to the next step.

Product Interface Design
& Vibe coded prototype

[ 02 ]

I've been skipping low-fidelity wireframes and going straight into Figma and Claude Code to explore designs. While Claude Code works through my prompt, I start from a blank frame myself, then judge which result is stronger and iterate on top of that.

Design system
& Project Handoff

[ 03 ]

Finally, I deliver a complete design system with variables in Figma, plus an HTML file wired to the Claude Code prototype. Both act as a source of truth for the design, and both are kept in sync.

Say hello at contact@guikerber.com

Open to freelance projects, full-time positions, and creative collaborations. If you have a product problem that needs attention, let's talk.