Logo de Sébastien Marteaux - UX & UI Designer

Sebastien Marteaux — Portfolio

I turn complex ideas into intuitive experiences that drive engagement and conversion.

Senior Product Designer focused on checkout, onboarding, design systems and mobile-first experiences for e-commerce, fintech and B2B SaaS.

Role : Product / UX & UI Designer Location : Bordeaux, France (Remote Friendly) Open to : Full-time / Freelance

About me

About me

Passionate about blending design, strategy, and business thinking, I craft smooth, purposeful digital experiences shaped by motion, clarity, and detail. I help teams transform ideas into refined products that elevate brands, create meaningful interactions, and deliver measurable impact across every touchpoint.

Work

Credit Agricole Alpes Provences
Website 2025
1964 — Constructa
Website 2024

Skills & Services

Continuously evolving with each challenge, I bridge design, development, and brand strategy—aligning vision with execution to craft experiences that are both clear and impactful.

01.

Product Strategy

Helping teams uncover clarity in complex environments — defining the vision, framing the right problems, and aligning design with measurable impact.

I bridge user needs and business goals to build a solid foundation for every product decision.
Through collaborative workshops, research synthesis, and design roadmapping, I help organizations shape products that not only look right, but work right — for both users and stakeholders.

User Research Problem Framing Design Strategy Journey Mapping Business Alignment Facilitation

02.

Design Experience

Designing intuitive, high-performing digital experiences that connect purpose, beauty, and usability.
My approach blends creativity with UX insights — from low-fidelity exploration to refined interfaces that guide attention and emotion through motion, layout, and interaction.


I craft cohesive design systems that support scalability, accessibility, and a consistent user journey across platforms.
Each experience is built to feel effortless, purposeful, and aligned with both human behavior and business ambition.

UX Design UI Design Wireframing Prototyping Design Systems Usability Testing Interaction Design Microinteractions Accessibility (WCAG) Responsive

03.

Delivery

Translating design intent into scalable, maintainable systems that perform in production.
I work hand-in-hand with developers to ensure seamless integration between design and code — transforming Figma components into living interfaces that reflect precision and purpose.


My focus is on building design languages that empower teams, improve velocity, and deliver pixel-perfect experiences with technical integrity.

Design Tokens Component Libraries Design Systems Front-End Collaboration Documentation Performance Tokenization Testing

Modern Design Stack