Looking for a job

Guilherme Kerber

@guilhermekerber

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I take early-stage fintech, SaaS and AI products from zero to launch through end-to-end product design.

Brazil

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What I'm looking for

I'm looking to partner with early-stage fintech, SaaS, and AI teams to frame problems, validate MVPs, and take products from discovery through launch.

I've taken 50+ early-stage products from zero to launch across fintech, SaaS, AI, Web3 and gaming. I own the work end to end, from problem framing and user research through UX, UI, design systems, testing and design QA.

At Koncepted, I improved landing-page conversions by up to 70%, launched an AI agent for creators and an AI NPC builder for game studios, and designed credit-market and order-book trading for a DeFi platform. By pairing Figma with coded prototypes, I cut the path from idea to validated MVP to three weeks.

Previously at 46graus, I helped grow the user base from 100K to 200K+ while the product expanded into a multi-product platform for creators and small businesses. I also build AI product experiences and working prototypes in Figma and Claude Code that are ready for handoff.

Experience

Work history, roles, and key accomplishments

Current

Freelance Senior Product Designer

Current

Freelance

Sep 2026 - Present (0 months)

Design partner for early-stage fintech, SaaS and AI startups, owning product design from problem framing to shipped product, including coded prototypes ready for handoff.

Product Design UX Design UI Design User Research Design Systems Prototyping Figma Claude Code

Education

Degrees, certifications, and relevant coursework

UX Unicórnio

Masterclass, AI/UX Design

2025 - 2025

Applied study of AI in product design, covering user experience in AI tools and UX research practices.

PUCRS

Bachelor of Arts, Publicity and Advertising

2009 - 2014

Bachelor's degree in Publicity and Advertising with a focus on creative design, branding, and graphic design, applied to visual identity development and brand communication.