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Thomas DuportTD

Thomas Duport

Supermalter

Lead Product Designer | UX | SaaS IA B2B

€550/day
155 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Thomas

Lead Product Designer with 10 years of experience in digital product design, specializing inSaaSenvironments andB2B AIproducts.

I have supported organizations such as **BNP Paribas**, **Orange**, **RATP**, **L’Oréal**, **Decathlon**, and the **Pass Culture**, on topics of product structuring, user experience improvement, and complex journey redesign.

I work from the scoping phase to the production launch, with a structured and pragmatic approach, adapted to multi-stakeholder contexts and constrained environments.

Product & UX
  • Product scoping and needs clarification
  • Structuring complex journeys (data, multi-stakeholder, constrained environments)
  • User research & user testing
  • Performance-oriented UX/UI design
  • Building, structuring, and evolving design systems
  • Structuring design practices (Design Ops)
  • Integrating and explaining AI features

Collaboration & Delivery
  • Cross-functional work with product, tech, and data teams
  • Facilitating workshops and aligning stakeholders
  • Coaching design and product teams
  • Implementing context-appropriate methodologies
  • Strengthening and structuring product squads
Available for long-term assignments or occasional support.
Let's connect to structure, clarify, and evolve your product.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Lille (up to 50km), Amiens (up to 50km), Rouen (up to 50km), Reims (up to 50km)

Experience

  • Valiuz
    Lead Product Designer
    RETAIL (LARGE RETAILERS)
    June 2025 - Today (1 year)
    Lille, France
    Context of the mission
    Mission to structure and manage design at Valiuz, in a context of rapid acceleration of Retail Media products and absence of a design team.

    The company
    Valiuz is the Retail Media entity of the Mulliez group, operating data and advertising solutions for major retail players such as Decathlon, Auchan, or Leroy Merlin.

    Main actions taken
    - Definition and management of the product-wide design strategy
    - Implementation of UX practices: discovery, user research, and user testing
    - Audit and redesign of key conversion-oriented journeys
    - Building and structuring the design system
    - Coaching PM and tech teams on UX/UI standards
    - Delivery of Figma files and specifications up to production launch
    Product Design User Experience Design Design System User Research Product Strategy
  • Pass Culture - Pôle Produit
    Product Designer
    PUBLIC SECTOR
    March 2025 - September 2025 (6 months)
    Paris, France
    Context of the mission
    Reinforcement mission for the Activation squad, aiming to improve the adoption and usage of the area dedicated to cultural players, in a context of high national impact public service.

    The company
    Pass Culture is a national program aimed at facilitating access to culture. It relies on digital products for beneficiaries and cultural players throughout the country.

    Main actions taken
    - Clarification and simplification of complex journeys for a non-technical audience
    - Improvement of the cultural players' web experience
    - UX structuring within a constrained framework (regulatory, accessibility, inclusion)
    - Contribution to the structuring and deployment of the design system
    - Cross-functional alignment between product, tech, design teams, and stakeholders
    Product Design User Experience Design User Research Design System User Interface Design
  • L'OREAL GLOBAL BEAUTY TECH
    Malt logoOn Malt
    Lead Product Designer
    FASHION AND COSMETICS
    December 2024 - Today (1 year and 6 months)
    Paris, France
    Context of the mission
    Design and design management mission for an AI-assisted marketing supervision product, in a context of high functional and data complexity, and global deployment.

    The company
    L'Oréal is the world leader in beauty. The Global Beauty Tech division designs technological products on an international scale to support the group's brands and marketing teams.

    Main actions taken
    - Scoping and UX management of an AI product for marketing budget decision support
    - Structuring AI usage: explainability, trust, and clarity of recommendations
    - Designing complex data/marketing journeys on a multi-country platform
    - Building and structuring the product design system
    - Cross-functional collaboration with marketing, data, product, and tech teams
    - Delivery of Figma files, high-fidelity prototypes, and iterations up to production launch
    Product Design User Experience Design Design System User Research Artificial Intelligence

Reviews

5.0

Out of 101 ratings

H

Hélène

Chargée de projet - Athéna

Several months project

-

Reviewed on 1/14/2026

Thomas est réactif, professionnel, à l'écoute et livre du travail de qualité. Je le recommande vivement.
HelenH

Helen

DECATHLON - AMSTERDAM GLOBAL DIGITAL HUB

Reviewed on 11/19/2024

Thomas was a great addition to the team here at Decathlon Digital. We needed someone that would be able to execute, deliver on Decathlon's brand and bring their expertise and knowledge to the Customer Growth - Membership domain. Thomas was able to manage key stakeholders, work within ambiguity and take the lead on several tasks. We would most definitely work with Thomas again when the opportunity arises.

Recommendations

Olivier GuilleOG
NJ
Julian LayenJL
+3
Olivier Guille and 5 other people have recommended Thomas

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Education

  • Master STIC Specialization MIAGE
    UPJV Amiens
    2016
    Master effectué en alternance spécialisé dans la gestion de projet
  • Professional License in Networks and Computer Engineering
    IUT Amiens
    2014
    Licence professionnelle effectuée en alternance et spécialisée dans le développement web

Certifications

  • Winner of the Microsoft Teams BeMyApp competition
    Microsoft
    2022
    User Interface Design User Experience Design Product Design
  • Google Digital Active
    Google
    2018

Skill set

Categories