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Maÿlis D'HaultfoeuilleMD

Maÿlis D'Haultfoeuille

UX Product Designer SaaS | Interaction Designer

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Maÿlis

Product UX/UI and Interaction Designer based in Paris, specializing in regulated industries (tech, healthtech, automotive) and immersive R&D.
I design and adapt SaaS product design, from functional architecture to graphic interfaces, for complex or high-risk uses, combining technical rigor, strategic decisions, and narrative sensitivity.

This work extends to interaction and data visualization systems integrated into connected environments, such as clinical devices, augmented reality interfaces, or projected screens within automotive cockpits.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km)

Experience

  • Freelancer
    Product Designer UX/UI
    TECH
    February 2026 - Today (4 months)
    Paris, France
    UX design consulting and operational support for SaaS products, mobile applications, and creative studios: strategic framing, user research, interface design, prototyping, and close collaboration with product and technical teams through to production.
    User Experience Design Figma User Research & Usability Testing Adobe Creative Suite Branding & Identity
  • Snke GmbH
    Product Designer | UX & Mixed Reality
    MEDICAL
    October 2024 - February 2026 (1 year and 4 months)
    Munich, Germany
    - UX Research and Analysis: Conduct user studies, interviews, and prototype testing to design intuitive and fluid clinical pathways, compliant with HL7-FHIR standards and GDPR requirements.

    - Competitive Analysis and Identification of complex needs in the hospital sector to optimize user experience in EHR software.

    - Interface Design and Prototyping: Create wireframes, low and high-fidelity mockups, interactive prototypes, and 2D/3D visualizations (Blender, Figma) for medical data visualization software and surgical assistance applications.

    - Development of interactive demos for international trade shows and conferences.

    - Augmented Reality and 3D: Consulting on interactions and UX design for AR applications in operating rooms (Unity, Godot), creation of avatars and immersive scenarios for clinical use.

    - Development of Snke's Design System and collaboration with development teams for its consistent implementation across all company software.

    - Interviews, user testing, and Agile work with multidisciplinary teams to transform briefs into production-ready interfaces, writing UX guides, and field research to optimize data exchange between patients and doctors.
    User Experience Design Figma User Interviews User Testing Functional Specifications
  • Kontrastmoment GmbH
    Interaction Designer | 3D and Mixed Reality
    AUTOMOBILE
    July 2022 - October 2024 (2 years and 3 months)
    Munich, Germany
    - 3D & Immersive Content (VR/AR, UE5): Design of immersive environments for VR and AR driving simulators and digital theatrical productions.

    - Blueprint interaction development, shader integration, cinematics, Niagara particles, and light/3D optimization for a coherent visual experience.

    - Creation of narrative scenarios based on real driving situations and breakdown into user journeys to ensure a fluid experience.

    - Research into new interfaces connecting Unreal to Protopie, DMX, MIDI, body tracking, and web.

    - Performance testing and documentation to optimize UX and hardware resources.
    Unreal Engine 5 3D Modeling Virtual Reality Protopie Unity 3D

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Education

  • Master of Arts HES-SO, Media Design specialization
    HEAD-Genève (Switzerland)
    2022
    Design critique et spéculatif, fiction de design, études des médias, design d’interaction et de jeu appliqué à l’électronique, à la programmation et au design industriel
  • Bachelor of Arts, Visual Communication specialization
    HEAR Strasbourg
    2020
    Design graphique appliqué au design éditorial et web, typographie, photographie et vidéo

Skill set

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