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We

Work here

The Agency
7 Place de l'Europe
14200 Hérouville Saint-Clair

And

Here

The Dôme
Esplanade Stéphane Hessel
14000 Caen

And

Here as well

Paris team
Commercial Manager
Technical Manager

Agency

Casus Belli,
A marketing consultancy agency at the service of communication that, with its planners and creatives, assists companies and institutions in a changing world.

Casus Belli,
An agency that reinvents the model through the exploration of social and technological innovations, in order to legitimize the actions by offering experience centered on users.

2005

The Web

2008

The new media

2013

Users' experience

2016

The model through exploration

2017

The Changer d’angle

Changer
d'angle

Team Team

  • Jérôme CAUDRELIER

    Jérôme CAUDRELIER

    PARTNER

    Jerome is an enthusiast who spent some time between the world of video games and startups before creating, with Matthieu Forget, Casus Belli; A name that is a tribute to their first love, role playing.
    Jerome, with his pioneering spirit, manages the project teams and conceptualizes inordinate operations. A finder of improbable phrases, he phones while walking (or walks while phoning) and is also a serious cook.
  • Matthieu FORGET

    Matthieu FORGET

    PARTNER

    Matthieu could have chosen accountancy but curiously he preferred the internet when it was still in its infancy. After having created his first major business at a time when it was still referred to as a web agency, he teamed up with Jérôme to create Casus Belli. His pragmatic mind is always on alert; passionate about Strategy and a History buff, no one dares challenge business plans, profitability ratios or any subject in the form of an Excel table.
  • Corinne MARCEAU

    Corinne MARCEAU

    COMMERCIAL DIRECTOR

    Corinne is pure Parisian, 100% communications agency with the names made from the initials of the founders. Corinne met Jerome and Matthieu for a single project site redesign; their freedom for innovation, research excellence, their creative sensibility, and she was seduced. After several years of traveling back and forth to Caen, Corinne has chosen to live in Normandy to think of new uses, create brand platforms and conceive communication strategies (and travel back and forth to Paris more often..).
  • Matthieu LE SOLLIEC

    Matthieu LE SOLLIEC

    CREATIVE DIRECTOR

    Matthieu is an explorer, he lived in Liverpool to obtain a Masters in Digital Art, studied synesthesia, moved to Paris to work as AD on prestigious accounts of large agencies: Peugeot, Boucheron, Mappy, Leroy Merlin. In 2012, he pushed open the door of the agency where he can be free, sassy and an outside of the box creative realist.
  • Gaël RAYON

    Gaël RAYON

    ARTISTIC DIRECTOR

    Gaël is a graphic designer and self-taught motion designer. It all started in the golden age of handmade internet when portals like about.com and yahoo triumphed! An avid art, technology, animation, video games and science lover, after a traditional AD career, he created Brother System, a laboratory of creative technology. Gaël joined the agency after several years of collaboration to create the Event-Installation offer and is one of the key actors of the Laboratory.
  • Sébastien FINOT

    Sébastien FINOT

    TECHNICAL DIRECTOR

    Sebastien is passionate about computers in all forms but especially video games ... (him too). Self-taught, an explorer, he has worn different hats, from developer to project manager and moved in the worlds of cinema, communication, fashion, Parisian agencies (him too). After having experienced journalism, one of his childhood dreams, he returned to the root of his passion : computing. In 2012, an interview and he becomes Technical Director at the agency where he is THE expert, provides R & D and is the best provider of pragmatic solutions.
  • Yann RAYON

    Yann RAYON

    DEVELOPER - AND MORE

    Yann is the developer! And it is not just a job. From the age of 7, he loved programing Oric and Amstrad. The code lines are like a music score for Yann who is a musician, photographer and is passionate about Japanese animation and video games. The days are always too short to satisfy his creativity, especially since he has taken the time to create Brother System with his brother. Like him, he joined Casus Belli and is involved in the Laboratory and the Event-Installation offer as well as the many projects of the agency.
  • Sarah PERRIER

    Sarah PERRIER

    CLIENT MANAGER

    Sarah epitomizes dynamism and curiosity. And we think that's one of the reasons that has made it possible to manage two simultaneous missions: her studies at Celsa to get her masters 2 and entrepreneurship missions for the Institute Curie. Missions that she does not abandon to join Casus Belli where she is a striving project manager and strategic thinker for major agency accounts.
  • Morgane NEELZ

    Morgane NEELZ

    Project manager

    As her cat, Morgane has lived several lives, with a diploma from CELSA in her pocket, she travelled the world as a « comm-trotter ».
    Her life at Casus Belli drives her as fast as her motorbike: it’s always with a smile that she steers between client support, reflection, coordination and project management.
  • Maxime CHARON

    Maxime CHARON

    COPYWRITER

    Maxime is the man who plays around with words, who dissects them and explains them and brings the concepts alive. After living as a Parisian for a few years, he returned to his native Normandy to benefit the team with all his rhymes.
    Maxime is also a Professor for some Caen students. And for us he is the agency's encyclopedia, always on time for lessons in general culture and cinema!
  • Lou BONTEMPS

    Lou BONTEMPS

    GRAPHIC DESIGNER

    Lou has a talent : she knows how to be everywhere at once. Since she obtained her Master's Degree in Digital Design, she has been multiplying projects: installation of events, creation of an app to teach sign language to children, ergonomics and interactive user experience ... And it doesn’t end here! Lou continues to explore new territories through drawing, movies and animation.
    She has joined the agency, which delights the team!
  • Quentin DUVAL

    Quentin DUVAL

    DEVELOPER

    Quentin wears many caps and always with panache. Project manager, web developer and integrator, multimedia developer, the master of XHTML, HTML5, CSS3, SASS, responsive & adaptive. Quentin with his computer degree, Software and Multimedia Developer joined the agency in 2013, to challenge the limits of platforms and make them retreat, such as Drupal, Joomla. Of course, video games are part of his world !
  • Geoffroy RIOU

    Geoffroy RIOU

    DEVELOPER

    After a Master 2 and several years in Brittany (or almost), Geoffroy pushed open the doors of the agency in September 2015 and was immediately welcomed by the geeks and gamers of the agency. Geoffroy is the big hearted geek capable of laughing at children's jokes and bending himself backwards to meet the demands of his project managers.