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François-Xavier DecarpentrieFD

François-Xavier Decarpentrie

Supermalter

Product Designer | UX UI AI | Problem Solver

€580/day
15 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About François-Xavier

Product designer with over 10 years of experience.

I design digital products where the logic is dense, stakeholders are numerous, and the environment is highly technical.

My focus: SaaS, business tools, complex workflows, and more recently, design with and for AI.

My approach is simple: for me, design is first and foremost a tool for clarification. I quickly create functional prototypes with real data (Cursor, Lovable), which allows for less time spent on mockups and accelerates collaboration with technical teams.

Some concrete examples:
At L'Oréal, I worked with IBM on AI tools to predict the performance of formulations in the lab. I also developed a GPT-4 assistant that helps scientists extract insights from their data, focusing on the issue of trust in these systems.

At Accor, I immersed myself in the daily lives of hoteliers to simplify their complex processes. Result: a design system optimized for their constraints (small screens, aging hardware, constant pressure).

For Biogen, I delivered a patient monitoring mobile app for the Japanese market in under 3 months, from research to production.

I integrate quickly into complex sectors without needing to be hand-held.

If you are building a complex B2B or B2E product, looking to integrate AI into an existing workflow, or need a designer who speaks the language of developers, let's talk.
  • French

    Native or bilingual

  • English

    Fluent

  • Japanese

    Fluent

  • Chinese

    Conversational

Can work on-site
Paris (up to 50km)

Experience

  • Orange
    Senior Product Designer
    E-COMMERCE
    January 2026 - Today (7 months)
    Paris, France
    Improvement of the checkout funnel for all Orange journeys and products (mobile plans, internet offers, devices, and accessories).
  • Bain & Company
    Senior Product Designer - RTN Contractor
    September 2025 - October 2025 (1 month)
    I designed and prototyped an AI chatbot in WhatsApp for the youth employment program of the NGO King's Trust.

    The chatbot acts as a coach and helps young people write their CVs, identify job openings, and prepare for interviews.
  • L'Oréal
    Senior Product Designer
    December 2023 - August 2025 (1 year and 8 months)
    Paris, France
    Conducted over 30 user interviews across France and internationally to gather expectations and concerns, resulting in a repository of 1200+ facts and 300 insights.

    Championed collaborative rituals to align design efforts with business and user needs.

Reviews

5.0

Out of 8 ratings

D

David

BIOGEN MA INC

Reviewed on 12/19/2023

I am pleased to write this review for François-Xavier, who has successfully completed the mission of creating a new mobile application for monitoring spinal muscular atrophy (SMA) symptoms in Japan. From the beginning of the project, FX took the time to fully understand all the specific constraints and challenges related to this application: adaptation for the Japanese market, consideration of the particular needs of patients with SMA, and the desire to offer a user-friendly tool to facilitate patient-doctor dialogue. Despite the complexity of the task, he demonstrated excellent listening skills and pragmatically identified the key points to address. Throughout the project, François-Xavier was very responsive and brought many creative ideas to meet all the set objectives. Thanks to his UX/UI expertise, he designed an ergonomic interface accessible to everyone. His facilitation skills were also very useful during co-creation workshops with the various stakeholders. Furthermore, the quality of the data visualization graphics he designed will allow both patients and doctors to accurately track symptom progression. I would like to highlight François-Xavier's exemplary collaboration with the development team throughout the project; his pedagogical approach and kindness contributed to effectively resolving all encountered constraints. Overall, François-Xavier successfully completed this mission with great professionalism. Through his quality work, he provided the Japanese market with a tool that perfectly met their needs. I will not hesitate to call upon his skills again for future projects and recommend him without reservation.
L

Lilian

Accor SA - SMDL - Digital Products & Innovation - UX & Design

Reviewed on 8/2/2022

Recommendations

Louise TissotLT
Brice RhodesBR
FU
Louise Tissot and 2 other people have recommended François-Xavier

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Education

  • Master of Science - Multimedia Creation and Production
    TELECOM Paristech
    2011
  • Master - Asian Affairs
    IEP Lyon
    2009

Certifications

Skill set

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