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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

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.

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.

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.

UX Designer at Number Four AG

January 1, 2012 - October 3, 2025

UX Design, UI Design, Design-Tech documentation.