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Designer with 15 years experience. Former agency founder and owner, I work with my clients from the discovery and strategic phases, to the production of their project. I speak also fluent Business and Code languages.…

Joffrey Jochum Muller

UX Designer, Product Designer, Designer, +6

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Designer with 15 years experience. Former agency founder and owner, I work with my clients from the discovery and strategic phases, to the production of their project. I speak also fluent Business and Code languages.…

Available to hire

Designer with 15 years experience.
Former agency founder and owner, I work with my clients from the discovery and strategic phases, to the production of their project.
I speak also fluent Business and Code languages.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

French

Fluent

English

Advanced

German

Beginner

Work Experience

Owner, Digital Advisor & Designer at Bter

January 1, 2022 - Present

Design consultancy focused on enhancing the impact of design in organizations' performance; responsibilities include business management, customer relationships, product design (UX, UI, Figma), design leadership for agencies and SaaS teams, and WordPress consultancy.

CEO & Creative Director at Fantassin web agency

January 1, 2022 - October 3, 2025

Founded the web agency, grew to a 7-person team, and led high-ticket websites and UX missions; managed agency operations, HR, marketing, finances, customer relationships, and design/tech team.

UX Designer at Number Four AG

January 1, 2012 - October 3, 2025

UX Design, UI Design, Design-Tech documentation.

Instructor / Teaching: Interface Design at Bellecour École (Lyon) / Sup de Pub (Lyon) / Ynov School (Lyon) / CREA (Geneva & Lausanne)

January 1, 2015 - Present

Teaching interface design and coaching Master-degree students; leading design workshops and Figma/UX workshops.