YTrémas
↓
Maÿlis d'Haultfoeuille
People often remember me for the unconventional umlaut on the “y” (“trémas” → umlaut in English). A small detail that makes it memorable and reflects the approach I bring to every project.
I'm a Product UX/UI & Interaction Designer with +4 years of experience in regulated and high-complexity environments (tech, healthcare, automotive...). I collaborate with corporate or independent teams of all sizes. I design interaction and data visualization systems for critical contexts, from complex SaaS platforms to embedded and spatial experiences within connected or intelligent ecosystems (XR, HCI, AI) combining technical expertise with strategic thinking.
/ PRODUCT DESIGN
/ WEB & DIGITAL DESIGN
/ IMMERSIVE & SPATIAL EXPERIENCES | XR
/ DESIGN SYSTEMS
Full portfolio available upon request. Some projects are protected by strict non-disclosure agreements.
I am currently based in Paris. I have previously lived and worked in Munich and Geneva, which has given me an informed perspective on diverse business workflows and design cultures. Collaboration and clear communication are central to my process, ensuring your project stays strong over the long term.
I gratuated from HEAD-Genève in Media Design and HEAR-Strasbourg in Visual Communication.
WHAT MAKES MY APPROACH DIFFERENT
With roots in graphic design and virtual reality, I approach product design through the lens of interaction and perception. This background shapes how I structure interfaces, considering not only visual clarity but also how users navigate, interpret, and interact with complex systems.
WHAT DOES SAAS/UX DESIGN HAVE TO DO WITH XR?
Four years ago, designing a VR product felt like a niche experiment. Today, spatial interfaces are showing up in surgical workflows, vehicle engineering and live diagnostics, exposing every UX problem to a third dimension. SaaS platforms and immersive environments break the same way: cognitive overload, time pressure, physical constraints, high-stakes decisions. Without an understanding of these, no interface holds up. That's exactly why I work across both.
I Worked With
TheNutrasphere
Rosalie Vernier
Oredge
BMW
Tout Bleu music
Royal Opera House
I Worked For
2024 - 2026
Snke GmbH as a Product Designer | UX & XR focus
Munich, DE
2022 - 2024
Kontrastmoment GmbH as an Interaction Designer | XR
Munich, DE
2021
Z1 Studio as an Interaction Designer | 3D & VFX
Geneva, CH
Exhibited At
2024
Munich Creative Business Week
TreeLifve (VR)
Munich, DE
2021
Biennale internationale de design graphique
Sub. (code-to-print edition)
Chaumont, FR
2021
Numerik Games
Blind Rumors (VR)
Yverdon-les-Bains, CH
2021
GSGS' 21 | International conference on gamification
The Lake (video game)
Geneva, CH & Online
2021
Distortion Festival
Fragments (short-video)
Geneva, CH & Online
2019
Festival Visions d'exil
Fragments (short-video)
Paris, FR
2018
Nuit de l'Aubette
Aubette 1928 (digital performance)
Strasbourg, FR
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