Mathis Thomsen

Portfolio

Selected projects in UX research, information architecture and interaction design.

2026 Confidential

Aura — a UX Agent for a Prompt-First Team

Product managers prototype their own vision, developers ship a 2.0 written entirely by prompt – and UX quietly loses its seat at the table. Instead of fighting that shift, I translated the discipline into an agent that lives where the building happens: in the code.

  • Process Design
  • AI Agent Design
  • UX Systems
  • Team Enablement
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2020 Confidential

Information Architecture for a Collaborative B2B Platform

Structuring a complex product world for a cooperatively organised B2B platform – with 6 workshops, 20+ participants from 12 companies and a concluding tree test.

  • UX Research
  • Information Architecture
  • Facilitation
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2025/2026 In Progress

Evidoxa — Research Data Management for Humanities Scholars

Research data management for humanities scholars — a tool for historians that structures complex networks of people, places, sources and events without requiring technical expertise.

  • Product Design
  • UX/UI
  • AI-aided Development
  • Prototyping
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2022 Confidential

Conversion Rate Optimisation for International Sales Landing Pages

A bounce rate of ~90%, a conversion rate below 1% – and a data-driven redesign process that fundamentally changed both. For an international B2C business.

  • UX Design
  • Conversion Optimisation
  • A/B Testing
  • Analytics
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2019–present

Paperless Life — Shopify Store UX, UI & Technical Management

Five years of e-commerce – from Etsy to Shopify, through two major relaunches, ongoing optimisation and two WIP projects. Not a closed case study, but a growing system.

  • UX/UI Design
  • Shopify
  • E-Commerce
  • Conversion
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ongoing Confidential

Design System – From Proprietary to MUI

A proprietary design system across multiple products and five developers – and a migration to MUI that users and developers barely noticed.

  • Design Systems
  • Figma
  • Component Architecture
  • Frontend Collaboration
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