Freelancer profile translated to English.

Description

👋 Hello, I am **Sébastien Marteaux — Senior Product & UX/UI Designer**.

For over 10 years, I have been helping companies and startups design **clear, intuitive, and high-performing digital products**, crafted to offer a fluid and engaging user experience.

My approach is based on a deep understanding of needs, an iterative design methodology, and rigorous execution, from prototyping to production.

🎯 What I bring to your projects

— Comprehensive **product expertise**, from user research to design system strategy.

— A **team and delivery culture**, acquired with clients such as **LVMH, Ubisoft, Crédit Agricole, Galileo Global Education, and Exaprint**.

— An **impact-oriented design vision**, combining visual consistency, storytelling, and functional performance.

🚀 My expertise

— UX Research & UX Strategy

— UI Design & Design Systems

— Prototyping & User Testing

— Journey & Conversion Optimization

— Product Collaboration with Tech Teams and POs

💡 **My goal**: to transform ideas into fluid, consistent, and impactful experiences where every design decision creates value for your users and your business.

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual

Workplace preferences

Can work on-site

Montpellier (up to 50km), Paris (up to 50km), Bordeaux (up to 50km)

LVMH Perfumes & Cosmetics
UX & UI Designer Consultant
October 2022 - July 2023 (9 months)
Paris, France
I assisted Maison Francis Kurkdjian (LVMH) in updating/redesigning the shopping experience on their e-commerce site.

• Analysis of the existing site, ideation and co-design workshops, prototype creation

• Design of new interfaces and design system update

• Tools used: Figma, Miro, Storybook
User Experience Design User Interface Design Figma
Groupe Casino
UX & UI Designer Consultant
July 2022 - October 2022 (3 months)
Saint-Étienne, France
At Groupe Casino, I led a user-centered design project for an internal tool.
Creation of an interactive prototype for user testing
Interface design (UI) and management of the existing design system
Complete redesign and structuring of the design system according to the Atomic Design methodology
Design of components and their interactions

Tools used: Figma (design & prototyping), Miro, and Slack (communication & iterations)
User Experience Design User Interface Design Figma
Crédit Agricole Alpes Provence
UX & UI Designer Consultant
July 2022 - October 2022 (3 months)
Provence-Alpes-Cote d'Azur, France
At Crédit Agricole Alpes Provence, I designed a new internal e-learning platform allowing employees to register for training and trainers to manage their content, schedule, and participants.

Methodology:
•Creation of a form to collect user feedback and needs
Conducting an interactive prototype and user testing

Tools used: Typeform, Adobe XD, Figma

Deliverables:
Complete definition of the project scope, user feedback analysis matrix, and recommendations
New prototype (Figma & XD) including similar pages for A/B testing
Components ready for integration into the Crédit Agricole Alpes Provence design system
User Experience Design User Interface Design Figma