Our Agency

  • Paris
  • London
  • Bordeaux
  • Tunis
CosaVostra is a digital strategy consultancy firm based in Paris, London, Bordeaux and Tunis. Our business, tech and creative brains - infused with a startup mindset - work together to build beautiful, effective and profitable digital adventures.

There are no wrong ideas (besides Brexit)

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Here is our
all-star team

some

  • work with music
  • love their jobs
Mathieu Stefani - Portrait

Matthieu

Chief Executive Officer

François Defossez - Portrait

François

Chief Consulting Officer

Pierre Stefani, Chief Technical Officer

Pierre

Chief Technical Officer

Laurent Kretz - Portrait

Laurent

Chief Operations Officer

Louis Dumoulin, Head of UK Office

Louis

Deputy General Manager

Timothée Le Vert - Portrait

Timothée

Client Services Director

Michael Beillaud - Portrait

Michaël

Creative Director

Emilien Laborde, Full-Stack Developer

Émilien

Full-Stack Developer

Catarina

Graphic Designer

Christine Pemba - Portrait

Christine

Creative Developer Junior

Adrien Maston - Portrait

Adrien

UX Lead

Valentin Graglia, Web Developer

Valentin

Web Developer

Mona Romdhani - Portrait

Mona

Front-end Developer

Sonia Yahyaoui - Portrait

Sonia

Front-end Developer

Clemence Gros - Portrait

Clémence

Head of Visual Design

Julie Faury - Portrait

Julie

Project Manager

Rosa Rankin-Gee, Creative Director UK

Rosa

Creative Director UK

Elise Durban, Digital Strategy Consultant

Elise

Digital Strategy Consultant

Rowan Swanson, Creative Consultant

Rowan

Creative Consultant

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Matthieu

Matthieu Stefani

Chief Executive Officer

Chief Executive Officer

Mathieu Stefani - Portrait

Founder of 10+ companies since 2005, Matt is a champion of ideas. He never fails to bring those ideas to life, whether for himself or for his clients. He pioneered social commerce with the launch of several successful products in France, and is an expert on social media and online content. He’s worked in digital media since 2002, and founder and host of the successful podcast “Génération Do It Yourself”. Matthieu is a coach at ESCP Europe Business School, speaker at HEC and advisor for several companies and VCs.

François

François Defossez

Chief Consulting Officer

Chief Consulting Officer

François Defossez - Portrait

Distributing Adobe and Apple throughout Africa and the french overseas territories is great, but in the end François got tired of lying on the beach, and ended up missing Paris’s periphique (motorway). So he moved on to to PubliAtis, creating SaaS CMS systems to develop the distribution of the press in France. In 2011, Francois launched himself as an entrepreneur when he created the website ArtyWalrus.com, which he sold in 2013.

Pierre

Pierre Stefani

Chief Technical Officer

Chief Technical Officer

Pierre Stefani, Chief Technical Officer

Chief Technology Officer, Development After training at ENSEIRB in Bordeaux, an elite graduate college for engineers, Pierre spent 12 years working on complex projects for banks and insurance companies at various software firms. A coding ninja, he specialises in PHP and can work with a plethora of CMS. After several years with Sopra and BI Consulting, he decided to work with his brother at CosaVostra… which is not always a piece of cake.

Laurent

Laurent Kretz

Chief Operations Officer

Chief Blague Officer

Laurent Kretz - Portrait

Laurent worked for 7 years helping major brands with their digital transformations, first at Lafarge in Paris, and then at Air France in New York. He then founded three startups in the mobile phone and geolocalisation sectors, two of which he then sold. In 2010, he created Start In Paris, the biggest weekly startup conference in France, and speaks regularly at HEC (the prestigious French Business School) on digital entrepreneurialism.

Louis

Louis Dumoulin

Deputy General Manager

Deputy General Manager

Louis Dumoulin, Head of UK Office

After a formative experience working closely with the President of LeMonde.fr (the French newspaper), Louis became the editor of the monthly magazine Books and the consultant for the President of Têtu, another leading French magazine. In 2016 he launched CosaVostra UK in London, to coordinate the digital agency’s activity there. Louis’ London team of 4 (and growing) does both content strategy for brands and strategy consultancy for media companies. A lecturer for the Public Affairs Masters at Sciences Po, Louis is a specialist in innovation and financing for media and cultural entreprises.

Timothée

Timothée Le Vert

Client Services Director

Client Services Director

Timothée Le Vert - Portrait

Timothée is not a digital native: he’s a digital immigrant. He spent over 10 years leading cutting-edge teams at advertising agencies (incl. Havas, Fullsix) between Paris, London and Lisboa. A digital transformation expert, Tim guides his clients and their brands through communication challenges, and is a hardcore activist for digital ROI optimisation.

Michaël

Michaël Beillaud

Creative Director

Creative Director

Michael Beillaud - Portrait

A self-taught designer, Michaël built his AD vision as a UI Designer at Humanoïdes Associés, the great graphic novel publisher of Bilal and Moebius. He then worked for over 10 years as the Digital Art Director of Altice Média (Express, Libération, Studio Ciné Live), one of the largest French media groups. The knowledge he gained there about high traffic websites gives him a great understanding of ergonomy, UX and business challenges. His triple bottom line: beauty, simplicity, efficiency.

Émilien

Émilien Laborde

Full-Stack Developer

Full-Stack Developer

Emilien Laborde, Full-Stack Developer

Emilien has been feeding on code for the past 7 years. Passionate about software development and a die-hard WordPress fan, he loves a new challenge. Primarily a back-end developer, he equally loves all front technologies (JS, Angular, Ionic, react) and creating beautiful dynamic web-apps. The experience he gained from working freelance makes him a great advisor, and an avid listener to his clients, always striving to provide the most precise answers possible.

Catarina

Catarina Bernardi

Graphic Designer

Graphic Designer

Catarina is just beginning her career in the creative industries, but so far it’s been good. She is originally from São Paulo, Brazil and moved to London to pursue her studies at the London College of Communication. She started out as an illustrator, working with commissions and participating in independent art fairs. After moving to London, Catarina explored the world of multimedia and digital design. Now she does a bit of everything – from graphic to motion.

Christine

Christine Pemba Kingala

Creative Developer Junior

Creative Developer Junior

Christine Pemba - Portrait

Toujours à l’affut des sites web fous et créatifs, Christine, passionnée par le web, a rapidement trouvé son équilibre dans le développement front-end et le web design. De nature curieuse et créative, Christine vois les briefs comme des challenges, des opportunités pour créer du nouveau et de l’inattendu.

Adrien

Adrien Maston

UX Lead

UX Lead

Adrien Maston - Portrait

A designer and coder, Adrien loves to play with fonts and bold layouts but never forgets his core challenge: a digital platform is built to be used. So he always puts the user first. His toolkit includes Sketch, Affinity Designer, Adobe CC, Sublime Text, VueJs, Framer, InVision… His professional motto can be summed up in a single obsession: “test, test, test.

Valentin

Valentin Graglia

Web Developer

Web Developer

Valentin Graglia, Web Developer

To be translated

Mona

Mona Romdhani

Front-end Developer

Front-end Developer

Mona Romdhani - Portrait

Multi-talented Integration specialist Mona is a relentless worker to whom no code can resist. With 15 years of experience, she’s settled in front of the CosaVostra computer screens in Tunis where she has been contributing to some of our greatest prides.

Sonia

Sonia Yahyaoui

Front-end Developer

Front-end Developer

Sonia Yahyaoui - Portrait

With her fairy fingers, Sonia gives the impression that integration is a magic trick. Fast, precise, and efficient, she manages to juggle the wildest fantasies of our designers and the most complex codes of our developers to shape the most beautiful projects. No need for a magic wand–she does it all with just a keyboard and a mouse. Impressive!

Clémence

Clémence Gros

Head of Visual Design

Head of Visual Design

Clemence Gros - Portrait

Clémence can seem like the quiet type. But make no mistake about it : she’s a go-getter, and knows exactly how to work to reach her objectives (and yours). She’s observant, persevering and a math whizz at heart. Her leitmotiv as a UI Designer is to create intuitive beautiful interfaces.

Julie

Julie Faury

Project Manager

Project Manager

Julie Faury - Portrait

With a Masters in Marketing and Brand Strategy, Julie knows the ins and outs of luxury. She’s worked for companies like Louis Vuitton and for agencies specialised in PR and digital. In the CosaVostra Famiglia, she’s our Marie Kondo, a master at organisation, and her enthusiasm is unstoppable, especially when it comes down to making her clients’ dreams, a reality.

Rosa

Rosa Rankin-Gee

Creative Director UK

Creative Director UK

Rosa Rankin-Gee, Creative Director UK

Rosa is a creative director and copywriter who has worked on award-winning campaigns at some of the best agencies in the world. She helps brands tell stories that stand out, from tech titans like Google and Deliveroo, to luxury brands like Domaines Barons de Rothschild, Christian Louboutin, Chloé and Hermès, all the way to cultural entities like Tate Modern and Art Basel. She’s also a prize-winning novelist. Her first novel The Last Kings of Sark won the international Paris Literary Prize. She recently finished her second novel Dreamland, and is at work on her third, My Only Boy.

Elise

Elise Durban

Digital Strategy Consultant

Digital Strategy Consultant

Elise Durban, Digital Strategy Consultant

Freshly graduated with a Masters in Business from IESEG Lille, Elise conducted her final thesis on archetypal femininity and the ethical judgment of advertising by women. She joined the CosaVostra UK team as a digital strategy consultant after having worked in a leading Parisian agency and as Communications Officer at the Women’s Forum for the Economy & Society.

Rowan

Rowan Swanson

Creative Consultant

Creative Consultant

Rowan Swanson, Creative Consultant

Rowan est une créative aux multiples facettes. Diplômée “Cum Laude” de Columbia University en Littérature et Philosophie, elle a travaillé dans la mode, l’art et le journalisme, à New York et à Londres. Du développement de longs métrages à Calamity Film (Pride, 2014) à la direction des ventes d’artistes tels qu’Antony Gormley, Damien Hirst et Anish Kapoor, sa carrière lui a permis de se nourrir d’influences culturelles variées. Rédactrice accomplie, son objectif est de s’approprier l’esprit d’une marque pour trouver sa voix la plus naturelle, conjuguant impact et précision.

you ?

you ?

Are you really thinking about it?

Are you really thinking about it?

Yes, you! If you’re friendly, enjoy up a challenge and have great ideas eight times a day, get in touch.

Get in touch

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Let’s make
something
amazing

hellolondon@cosavostra.com