Mathieu Guillon
Hi, I'm Mathieu GuillonProduct Designer · UX/UI

I make complex platforms feel simple.

Research, information architecture and design systems, from the first benchmark to user testing.

  • 6+ years of experience
  • Aix-en-Provence
  • Figma · Drupal · WordPress
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About

From dense content to clear interfaces.

I'm a Product Designer with 6+ years of experience designing complex web platforms, most recently for Aix-Marseille University, one of France's largest universities. I turn dense information and institutional constraints into clear, scalable experiences — through user research, information architecture and design systems.

I work closely with project managers, developers, content teams and end users, from the first benchmark to user testing, to deliver interfaces that are realistic to build and easy to maintain. I also take on freelance projects for small businesses, from branding to fully built websites.

My areas of focus

Product DesignDesign SystemsInformation ArchitectureUser Research & TestingPrototypingAccessibility

I believe good constraints make good products: clear rules, reusable systems and real user feedback are what turn a redesign into something that lasts.

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Expertise

Product Design

Design Systems

Web Platforms

User Research

Accessibility

Prototyping

Built to be built

My designs are made to be built: components that map to real Drupal blocks, interaction states thought through upfront, and clickable prototypes to validate journeys before the first line of code. I also use AI as a production tool: I designed this portfolio in Figma, then built it in Next.js by directing an AI assistant, from the design system to accessibility.

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Let's work together

Looking for a Product Designer who enjoys solving complex problems through thoughtful design? Let's talk.

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