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

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.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert

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.

Education

Master Degree in Art Direction (honorable mention) at Applied Arts Bellecour, Lyon, France
January 11, 2030 - November 18, 2025
Bachelor Degree in Multimedia at Strasbourg University, Strasbourg, France
January 11, 2030 - November 18, 2025
2-year technical-degree in Communications & Multimedia at Strasbourg University, Strasbourg, France
January 1, 2008 - January 1, 2010

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Education, Media & Entertainment