• with your keyboard
  • by clicking
  • by dragging
  • on your mobile or tablet


the data agency


The Internet generates titanic volumes of data: behavioural, commercial, advertising… Such data have become essential to understanding user needs and develop a smarter marketing approach. Yet, connected devices and communication channels are multiplying and changing so fast that harnessing the power of innumerable data streams has become an incredibly delicate task.

fifty-five helps you collect and organise your data, to let you monitor and optimise the performance of your digital assets and acquire and retain customers more efficiently.


Our customers

  • McDonalds's McDonalds's


  • Danone Danone


  • Air France Air France

    Air France

  • Se Loger Se Loger

    Se Loger

  • Axa Axa


  • Renault Nissan Renault Nissan

    Renault Nissan

  • Smzdm Smzdm


  • L'Oréal L'Oréal


  • Carrefour Carrefour


  • Google Google




  • Crédit Agricole Crédit Agricole

    Crédit Agricole

  • PSA Peugeot Citröen PSA Peugeot Citröen

    PSA Peugeot Citröen

  • Lacoste Lacoste


  • 3 Suisses 3 Suisses

    3 Suisses

  • Pages Jaunes Pages Jaunes

    Pages Jaunes

  • Ferrero Ferrero


  • Bouygues Bouygues


  • François Hollande 2012 François Hollande 2012

    François Hollande 2012

  • Le Crédit Lyonnais Le Crédit Lyonnais

    Le Crédit Lyonnais

  • Accor Accor


  • BNP Parisbas BNP Parisbas

    BNP Parisbas

  • Badoo Badoo


  • HP HP


  • Richemont Richemont




Download our case studies

B&B Hôtels | Mobile Mediabuy & Measurement
  • B&B Hôtels | Mobile Mediabuy & Measurement
  • Tooway | Facebook/SEA synergies
  • Mercure | Webtesting
  • Ferrero Kinder | Smart Survey
  • Ferrero | Cookie Consent
  • PagesJaunes
  • Air France
  • Lacoste
  • SeLoger.com
  • Vente-privée.com
  • Pimkie

How can we precisely measure the ROAS of mobile advertising campaigns?

Industry verticals

  • Automotive

    • Citroën
    • Dacia
    • Elite Auto
    • Oscaro
    • Peugeot
    • Renault
    See all Close
  • Cosmetics

    • Beauté-Privée
    • Biotherm
    • Clarisonic
    • Lancôme
    • L'Occitane en Provence
    • L'Oréal
    See all Close
  • Food

    • Bel
    • Danone
    • Ferrero
    • McDonald's
  • Banking, Insurance & Finance

    • AXA
    • AXA Family Protect
    • BNP Paribas
    • Carrefour Banque
    • Cétélem
    • La Mutuelle Générale
    • LCL
    • MAIF
    • MMA
    • Sofinco-Finaref
    See all Close
  • Luxury

    • Adamence
    • Armani
    • Balenciaga
    • Baume & Mercier
    • Boucheron
    • IWC
    • Jaeger Le Coultre
    • Mont Blanc
    • Panerai
    • Piaget
    • Puig
    • Roger Dubuis
    • Saint Laurent
    • Van Cleef & Arpels
    • Vacheron Constantin
    See all Close
  • Media, Local & Entertainment

    • Badoo
    • Bouygues Immobilier
    • Bouygues Télécom Régie
    • Efficity
    • Fotolia
    • Google MEEL
    • La Fourchette
    • Le Monde
    • Ouest France
    • PagesJaunes
    • Quotatis
    • SeLogerNeuf.com
    • Smartbox
    • Solocal
    • Vivastreet
    See all Close
  • Retail

    • 3 Suisses
    • Darty
    • Delamaison
    • Lacoste
    • Maisons du Monde
    • Pimkie
    • Pixmania
    • Quelle
    • Vente-Privée
    • SNZDM
    See all Close
  • Healthcare, Energy & Government

    • Actiris
    • EDF
    • François Hollande 2012
    • Pfizer
    • Schneider Electric
    See all Close
  • Technology

    • Bouygues Télécom
    • Hewlett Packard
    • OVH
    • SFR
  • Travel

    • Accor
    • Air France
    • B&B Hôtels
    • Ibis
    • Mercure
    • Pierre & Vacances Adagio
    • Pierre & Vacances Village Club
    • Pullman Hôtels
    • Sofitel
    • Voyage-privé
    See all Close

About Us


We help advertisers leverage their data to increase business performance and adopt a smarter marketing approach. We provide services and software solutions to help them through project completion.

As data volumes are surging, our ability to process highly diverse formats and huge data sets has never grown so fast. Our habits are deeply transformed by what we call “Big Data”. Properly harnessed, the data deluge can mean greater efficiency and considerable time and cost savings.

55% of people entering a store will walk out having purchased something.

On the internet, this conversion rate falls to 2.1%

As estimated by Google and Kantar Media for French e-commerce in April 2013

fifty-five helps you collect and organise your data, to let you monitor and optimise the performance of your digital assets and acquire and retain customers more efficiently.
Read more about our solutions and services.

Innovative company

fifty-five is a certified “Jeune Entreprise Innovante” (Young Innovative Company) and is supported by OSEO, the French agency for Innovation and SME development. Together with 2,000 other carefully selected start-ups, fifty-five is a member of the Oseo Excellence network. We design solutions to meet marketers’ needs with powerful yet simple software: dashboard, data visualisation tools and data products.

Our milestones

  • 55 is officially launched

  • 10th employee

  • Member of Bpifrance Excellence and “Young Innovative Company"

  • We start doing media-buying

  • Google Analytics Premium launched in France, we are a certified reseller

  • 55th employee

  • Our mining platform is launched,
    after 3 years of R&D

  • 55 UK is launched,
    we are in London!

  • 55 Hong-Kong is launched

  • 100th employee

  • We are the first Google Analytics Premium reseller in mainland China

  • 55 Data & Digital Strategy offer is launched

The team

Co-founded by former Google executives in 2010, fifty-five is the combination of four trades: software integration, consulting services, SaaS development and digital media-buying.
We provide innovative services and solutions to help advertisers develop smarter marketing approaches: optimise site and user experiences, improve acquisition strategy and enrich customer knowledge.

Marketing strategy, digital media-buying, tracking, web analytics, data mining, statistics and machine learning, data visualisation, engineering… Our team brings together a unique mix of complementary skills, all dedicated to improving your marketing.

Read more about the co-founders Back to the team
  • Elsa developed her passion for digital after several years working in webmarketing. She managed to combine passion and work by joining 55. She holds a degree in foreign languages and an MBA in E-business.

    Elsa Media Trading Specialist
  • Igor holds a degree from the National University of Kharkiv and an M.S. in decision and statistical science. A talented piano player, he's also an analytics expert.

    Igor Analytics Expert
  • A graduate from INTEC PARIS, Stéphanie has worked as an accountant for more than ten years in different industries, before jumping onboard the Big Data ship. She joined the 55 team in 2015 to keep track of our figures.

    Stéphanie Accounting Manager
  • After spending some time in an advertising agency, Camille joined Google's sales then marketing teams. He is a graduate from Paris Dauphine, and he specialised in Digital Media.

    Camille Senior Data Analyst
  • Laurent spent many years at Keyade before becoming Director of Search at KR Media. This kung-fu fighter and accomplished yogi joined fifty-five in 2011 to develop the Media offer.

    Laurent Senior Media Manager
  • An ESSEC graduate and a keen basketball player, Gwenn made a slam dunk when she came to work at 55. She warmed herself up working in marketing, first at an e-merchant and then at Nestlé.

    Gwenn Senior Data Analyst
  • Benoît was rerouted several times before landing at 55 - first from Law to Business at EM Lyon Management School. After a first stop at Rocket Internet, he followed the Data itinerary. Direction: route 55.

    Benoît Data Analyst
  • From 5 years working as a consultant, this bearded man has kept a sense of commitment, and a love for cufflinks. Paul fell in love with Digital Analytics just as he fell for board games in his childhood.

    Paul Data Insights Manager
  • Annabelle cut her teeth working at Proximity, MRM, and Isobar before becoming SVP at iProspect (Dentus Aegis Network). Originally from Chamonix, she'll move mountains for fifty-five.

    Annabelle Head of Media Programs
  • Freshly graduated from ESSEC, Pauline spent a year in Market Research in Boston, where she became fond of data. Next thing, she was joining fifty-five’s consulting team.

    Pauline Data Analyst
  • After graduating from EDHEC and the London School of Economics, Samy worked as a Consultant at Deloitte. This basketball fan then joined 55 to bring his A-game to the data analysts' roster.

    Samy Senior Data Analyst
  • After working in consulting and webmarketing, this INSEEC marketing graduate joined our media team in 2013.

    Kevin Senior Media Trading Specialist
  • Tiyab is a frontend and backend developer from West Africa. He loves thinking out of the the box to innovate and build things from scratch, to solve all kinds of problems and create amazing stuff with technologies.

    Tiyab R&D Engineer
  • During his 10+ years experience, Pierre held leadership positions in marketing, sales, and strategy at companies such as Microsoft and Canal+. He is a Polytechnique and Telecom Paris graduate.

    Pierre Director, Consulting and Business Development
  • Lycos, Infonie, Egg then Google, where he was Head of Strategic Partnerships for Southern Europe: the Internet has no secrets for Jean.

    Jean Co-founder, Managing Director
  • Jean-Baptiste is an ESCP Europe graduate, with marketing experience working at Ubisoft and Canal+. In search for new horizons, this young Breton headed towards data and landed fortunately at fifty-five.

    Jean-Baptiste Data Analyst
  • Benjamin started working in the financial sector and discovered digital marketing at Google, where he became fond of data. After graduating from ESCP Europe, he joined our consulting team.

    Benjamin Data Analyst
  • An ESSEC graduate, Gaelle has worked for the big ones (Microsoft, Google) in Paris, London and Dublin, before landing a job at 55 and choosing to join the data crew.

    Gaëlle Data Analyst
  • With degrees from ENSAM and Edinburgh University, this keen swimmer dived into his entrepreneurial adventures by founding Trustfer, before turning his attention to the vast digital oceans at fifty-five.

    Issam Senior Data Analyst
  • If you are passionate about the internet revolution, digital marketing and big data, if you are creative yet methodic, always eager to learn and build, take a look at our job openings!

    Sergei Have you got talent ? Join fifty-five
  • Zhibo, a computer science graduate from JILIN university, came to France to study multimedia at UFC. Now he's a Senior Tag Specialist at 55 where he always finds someone to play basketball and DOTA.

    Zhibo Senior Tag Specialist
  • After several years working in the telecommunications sector, Sigbjørn joined fifty-five's R&D team to develop our real-time solutions, as well as to reinforce the bike team.

    Sigbjørn Technical Project Manager
  • With multiple degrees from prestigious institutions (ENS Cachan, HEC Paris), this enthusiastic linguist started working at Google in Sydney before joining fifty-five in its early days.

    Lan Anh Marketing Manager
  • An HEC graduate, he cut his teeth at Arthur Andersen before working for AREVA and discovering Silicon Valley. Wanting to live the startup life in the heart of Paris, he joined the fifty-five adventure!

    Fabrice CFO
  • After coming to and fro across the Atlantic ocean working in digital marketing, Elsa came onboard our consulting team. She's a graduate from ESCP-Europe.

    Elsa Senior Data Analyst
  • Audrey graduated from HEC Paris, started her career at Facebook Dublin, made a move to entrepreneurship before understanding that data was to rule her world – pretty surprising for a former Arts student.

    Audrey Data Project Lead
  • Guillaume used to have 2 passions: web technology and innovation. After graduating from Supaéro, he joined fifty-five's consulting team to develop two new hobbies: analytics and foosball competitions.

    Guillaume Senior Data Analyst
  • Geoffrey is an ESCP Europe graduate, and a very fine cook. After interning at L’Oréal, he ventured into entrepreneurship, before joining our consulting team to cook and serve your data on a silver platter.

    Geoffrey Senior Data Analyst
  • Ginette is from Venezuela, but Spanish is not her only language. This polyglot holds an M.A. in Languages & European Management and lived in the U.S. & Germany before settling down with us at 55.

    Ginette Media Trading Expzer
  • Robin left his cherished hometown of Toulouse to work at Rocket Internet in Brazil, before joining our team. He has graduated from both HEC Paris and Law School, and he's a fearless swimmer.

    Robin Product Lead
  • After graduating from the Beijing University of Technology, Meng completed his education at EFREI in Paris. He's been part of the Product team since 2010.

    Meng Senior R&D Engineer
  • Freshly graduated from ESSEC, Enguerrand launched an ecommerce platform. Two years into his entrepreneurial adventure, he heard of us, and simultaneously joined our football and consulting teams.

    Enguerrand Senior Data Analyst
  • Charles graduated from HEC Paris and Sciences Po, and first tried his hand at Finance and Law. After an experience at Rocket Internet in Asia, he decided to get serious about data and joined 55.

    Charles Data Analyst
  • After several jobs in Marketing, including one in Brazil where she learned Portuguese, Mathilde developed a passion for tech. Gaining a Masters in Web Marketing, she joined 55 as a Media Specialist.

    Mathilde Senior Media Trading Specialist
  • Don't ask why Milena would rather live in France than in her home country of Brazil. She holds a Master's Degree in International Management and worked in e-marketing before joining our trading desk in 2014.

    Milena Senior Media Trading Specialist
  • Graduating from Telecom Bretagne, Charlotte spent over 8 years in a consulting firm specialised in Telecom, Media & Internet. She joined fifty-five in 2014 to lead the Business Operations team.

    Charlotte Head of Business Operations
  • Antoine is an ISEP graduate. He started his career at Sopragroup, then went to IBM Business Consulting Services in the banking industry, in the CRM and BI departments.

    Antoine Practice Leader
  • After completing a Master's degree in digital marketing, Zineb decided quite naturally to enter the digital world. This fitness practitioner joined the Trading Desk team with high levels of energy and motivation.

    Zineb Media Trading Specialist
  • Nicolas started at Vivendi Universal, before moving on to Photoways. A graduate from ESCP-Europe, he becomes Head of the YouTube & Display team at Google, before co-founding fifty-five.

    Nicolas Co-founder, Managing Director
  • Working at ADIT on business modelling missions, this HEC Paris & Telecom ParisTech alumnus gained an acute knowledge of e-retail, which he puts to good use as Data Quality Lead at 55.

    Réda Data Quality Lead
  • Hichem started in strategy consulting at OC&C after graduating from Centrale Paris. Fond of diving, he took a leap and plunged into data in 2013.

    Hichem Consulting Manager
  • A passionate soccer fan and graduate from ESSEC, Gérard chose data as his pitch to express himself. After many trips exploring Asia, he was naturally transferred from Paris to our Hong Kong office.

    Gérard Data Analyst
  • Soon to graduate from ENS Cachan in Applied Mathematics, Romain joined fifty-five to build predictive models, eat bananas, and play foosball.

    Romain Data Scientist Lead
  • A talented guitar player who speaks 4 languages, Vasyl, holds an MS in I.T. from Kiev and a post-masters degree from Science Po Paris. And guess what, he's a nice guy.

    Vasyl Technical Project Manager
  • This Chinese girl chose not to become a diplomat after graduating from Sciences Po Paris. Yet she joined 55 with a strong belief: data can also build bridges between countries.

    Zimo Data Analyst
  • Antoine used to work in advertising, but don't think that's where he started growing a beard. It all began when he switched to market finance. He switched back just in time, but kept the beard.

    Antoine Senior Data Analyst
  • This Scottish academic holds 2 M.A.s and co-wrote the first French user guide to Google Analytics. After leaving Google and a short stop at Keyade, he co-founded fifty-five.

    Alan Co-founder, Data Insights & Analytics Director
  • This HEC Paris graduate cut his teeth working as an M&A analyst and in corporate finance in Dubai. At L'Oréal, Elie started in digital marketing, which led him to join 55's consulting teams.

    Elie Senior Data Analyst
  • After a few years in management control, Claire decided to join the world, the wide and the web: she started by creating a website on nomad travelling before joining 55 as a web developper.

    Claire Tag Specialist
  • After graduating with a B.A. in Communication and HR in Morocco, Marwa set out to conquer the Eiffel Tower with an M.A. from INSEEC. Freshly graduated, she joined the fifty-five family in 2014.

    Marwa Senior Media Trading Specialist
  • Graduating with a degree in Brand Strategy, Morgan worked for ad and web agencies. He developed his passion for digital media from his experiences in Montreal and Shanghai before joining 55.

    Morgan Senior Media Trading Specialist
  • A former consultant for IBM in the retail banking sector, Kim joined fifty-five in the early years. Her background includes Advanced Computing at Imperial College and E-Business at HEC Business School.

    Kim Head of Consulting UK
  • After working for five years in an advertising agency, Chloé secretly dreamed of joining the media wonderland. Joining 55 in 2015 has allowed her to nurture her two passions: the digital world and gifs.

    Chloé Media Trading Specialist
  • Anaïs graduated from ESCP Europe, started working in Berlin before moving back to Paris. After doing some time in finance and the IoT industry, she joined the consulting team at 55.

    Anaïs Data Analyst
  • Hippolyte started working at PayPal and in the start-up scene before joining fifty-five's Business Operations team. This HEC Paris graduate aims to bring the agency's soccer team to the top.

    Hippolyte Senior Business Operations Analyst
  • Nicolas has been a consultant for 10 years, first in acquisition, then in data analysis. He joined 55 in 2015, as Data Insights Manager and Adobe Marketing Cloud expert.

    Nicolas Data Insights Manager
  • After working in Marketing and Management Consulting, this Franco-British citizen graduated from the University of Bath and ESCP Europe joined 55 to learn the language of data.

    Nina Data Analyst
  • After 10 years in French equity sales at Deutsche Bank, Mathilde decided to downsize to smaller companies: Titouan Lamazou, Wincomparator, then finally she joined fifty-five as our super-hero.

    Mathilde Administrative & HR Senior Manager
  • As a HEC graduate with a passion for cinema, Claire spent a year working in the Media & Entertainment industry, before specialising in managing new technologies.

    Claire Senior Business Operations Analyst
  • Following an internship at Mesagraph, Jérémy graduated from Cranfield University where he studied technical computing and distributed systems. He joined the R&D foosball team at 55.

    Jérémy Senior R&D Engineer
  • An EM Lyon graduate, Jean-Baptiste started as a consultant for Accenture in Paris then NYC. A huge rugby fan, he broke the line to join fifty-five and the big data field in 2014.

    Jean-Baptiste Data Project Lead
  • After graduating from ESCP-Europe, Camille entered the digital world at PSA. Always eager to learn more about consumers' online habits, she joined fifty-five's media team.

    Camille Data Project Lead
  • After graduating from ENSAE, Bettina started at Ekimetrics. Always eager to remain with the data front runners, this talented cyclist joined 55.

    Bettina Data Scientist
  • After working in marketing at LVMH, this HEC Paris graduate became obsessed with things digital, data and optimisation. An indefatigable world traveller, Elodie finally settled down in Paris and joined 55 adventure as a consultant.

    Elodie Data Analyst
  • This EDHEC graduate started working in financial markets before venturing into a Rocket Internet startup. Being a foodie, he joined 55 to cook your data with love and spice up your business.

    François Data Analyst
  • Edouard worked at Fnac and Accor before joining us. Not only is he an FBS graduate, he was also trained in a gastronomic restaurant while studying Tourism, so he can help you select a good vintage wine!

    Edouard Data Project Lead
  • With 20 years of marketing and digital leadership - making ads at BBH, building digital transformation at Razorfish... Rob loves fashion, farming and football and is leading a stylish squad of 55ers to victory in the UK.

    Rob Country Manager UK
  • Graduating from INSAT Tunis, Mohamed Ali joined 55 after demonstrating his skills during an internship. Despite his passion for soccer, he didn't make it past the 1/4 finals of our foosball world cup.

    Mohamed Ali Senior R&D Engineer
  • Julien is passionate about the web ecosystem; he joined 55 after working at Fnac. A fond traveler at heart, he will take special care of your international campaigns.

    Julien Media Trading Specialist
  • After graduating from Assas Law University and Audencia Business School, our former slam poet Victor chose data as his new field of expression.

    Victor Data Analyst
  • Cradled by technology from his early years, Adrien joined the Trading Desk team at 55 after a successful internship in Search. His passion: backpack roadtrips.

    Adrien Media Trading Specialist
  • Arnaud worked at Havas & Monster before joining Google as Director of Strategy & Operations for Southern Europe from 2005 to 2010. fifty-five is the #3 start-up he founded.

    Arnaud Co-founder, Managing Director
  • Freshly graduated from HEC Paris and Ecole Polytechnique, Christophe founded a crowdfunding platform, before joining 55 to pursue his passion for data.

    Christophe Data Analyst
  • A graduate from the University of Sydney, Kristina founded an eCommerce website before joining IBM where she discovered her passion for Big Data. Eager to learn more, she joined fifty-five.

    Kristina Senior Data Analyst
  • After graduating from NEOMA, Camille started working abroad before joining our Trading Desk. She's into abstract painting, but when it comes to work, she's definitely driven by facts & figures.

    Camille Senior Media Trading Specialist
  • Thibaud worked for almost 2 years at LVMH in New York before joining the fifty-five team. This EDHEC graduate is a seasoned traveller, and he cannot wait to explore your data.

    Thibaud Data Analyst
  • Someone once told Ségolène that "data is the new oil", so she very simply joined 55 as a data analyst after having worked one year at Total. She likes to play with words, but also with data :)

    Ségolène Data Analyst
  • Ian worked for 16 years in a technical web agency in Liverpool, England as both Trainer and then Digital Strategist. He likes making websites pay for themselves, just like fifty-five.

    Ian Analytics Expert
  • A Graduate from Skema Business School, Joséphine worked at Canal+ and Orange before joining us. To make it short, she has 2 loves: badminton and data.

    Joséphine Senior Data Analyst
  • After studying Digital Design, Damien started as a UI / UX designer. He then discovered web development and naturally ended up joining fifty-five as a front-end developer.

    Damien Senior R&D Engineer
  • Holding a degree in Game Design & Programming, Arnaud started as a web dev in video games. Passionate about R&D and technical challenges, he's been thrilled to discover the world of data at 55.

    Arnaud Senior R&D Engineer
  • Pei worked 5 years at Keyade as SEM & Training Manager before joining fifty-five. She holds a degree in French literature from Sun Yat-sen University (Guangzhou) and a Masters in Economics.

    Pei Senior Media Technologies Manager, SEM & Display
  • Gautier is an EDHEC graduate. He first started at Ernst&Young. Then his faith into web analytics led him to join fifty-five's consulting team.

    Gautier Data Project Lead
  • Louis started selling savoury cookies for Michel & Augustin. He swapped tastiness for A/B testing and analytics by joining our consulting team - helping other brands manage another form of cookies.

    Louis Data Analyst
  • After graduating from ESCP Europe, Léa started her career as a new biz consultant at Dentsu Aegis Network. Convinced that lolcats and data will define the future, she joined fifty-five.

    Léa Data Project Lead
  • Passionate about digital and measurement challenges, Mike spent over 10 years in media agencies leading the Data & Analytics departments. Looking for the next data challenge, he joined our media expert team.

    Mike Senior Media Analytics Manager
  • After 5 years at Google, Serge co-wrote the 1st French book on Google Analytics and co-founded Wasabi Analytics. He joined fifty-five in 2010 and is now head of the data collection team.

    Serge Head of Product & Data Insights
  • Hugo graduated from EM Lyon and joined Google's Sales then Operations teams. We're not sure where he's the most qualified: digital media, wrestling, or quaint forgotten music hits?

    Hugo Media Technologies Director
  • After graduating from ENSAM and ESSEC, Benoît spent over two years in Asia in strategy consulting and finance before coming back home to join our consulting team.

    Benoît Senior Data Analyst
  • After 8 years as marketing & BI manager at Delamaison, a French Home & Garden pure player, Ludovic joined fifty-five for a deep dive into his favorite subjects: e-commerce & big data.

    Ludovic Product Manager
  • After graduating from the National School of Fine Arts in Paris, Bruno worked in the advertising world during more than a year. His thirst for new experiences and knowledge led him to 55.

    Bruno UI/UX Designer
  • After 6 years spent at AT Internet, Marjorie joined fifty-five to improve her Web Analytics skills. A great horse rider, she will get your technical teams galloping.

    Marjorie Senior Analytics Expert
  • After graduating from EDHEC, with stints in Sao Paulo, DC, and SF, Cédric settled down in Hong Kong in 2010. Creator of the local chapter of the Founder Institute, Cedric leads 55's journey in Asia. Zai Tien!

    Cédric Consulting Manager
  • A graduate from Sciences-Po, Céline tries her hand at being a strategic planner associate first, and an assistant advertising manager then. That jazz lover finally joins fifty-five in 2014, here is what really matters.

    Céline Senior Data Analyst
  • Telecoms, media, insurance... Marie-Adeline has worked as a consultant in a myriad of industries and organisations, from small NGOs to Capgemini. She graduated from Dauphine.

    Marie-Adeline Consulting Manager
  • Matthieu joined 55 following a meandering route: BSc in Sports studies, MA in Communication/HR, event planning... Today this inveterate tennisman has one goal: make 55ers happy!

    Matthieu HR & Administrative Associate
  • An HEC Paris graduate, Lamiae started working in the financial sector before launching a Rocket Internet company in Morocco. Then the craving for digital continued and she joined us in 2013.

    Lamiae Data Project Lead
  • From Autonomy to Verity, EDF to Google, Jeff's faith into the most exciting web technologies has never faltered. Today he leads our stellar cast of engineers in search for data of the purest quality.

    Jean-François Chief Technical Officer
  • After graduating from ESCP Europe, with majors in innovation and rowing, Alice first joined an advertising agency... and quickly landed at fifty-five, with the firm belief that it's all about data.

    Alice Senior Data Analyst
  • This technology veteran was around for the millenium’s first wave of tech startups, he even remembers using Netscape and Napster. He now puts all this experience to good use at fifty-five.

    Baptiste Technical Project Manager
  • Jean-Hubert started his career at Accenture, then Renault, before joining 55 to help automotive players better embrace digital transformation.

    Jean-Hubert Practice Leader Automotive
  • Mats has over 20 years experience in the Internet industry. After graduating from HEC Paris, he started out in marketing at L'Oréal. He was Google's Managing Director for Southern Europe from 2004 to 2010.

    Mats Co-founder, CEO
  • After a few years working as front-end developer, Guillaume joined the world of data to share his expertise with us and take up new challenges.

    Guillaume Tag Specialist
  • A former law officer who traveled the world as a gendarme, Luc switched from penal to source code. Today he's a student at 42 Engineering school, sailing the high-seas of data in our R&D team.

    Luc R&D Engineer
  • After 5 years' experience at L'Oréal and LVMH, this former visual merchandising expert has found new challenges switching from physical to digital retail, and expanding from Asia to global markets.

    Xiaoyan Data Project Lead
  • Arnaud Massonnie Managing Director, Engineering, Product & Operations

    Arnaud started working at Havas Interactive, the Vivendi group’s internet lab, before becoming Monster.com’s Marketing Director in France. He then developed De Agostini Atlas’s e-learning division. During these busy years, this tireless EDHEC Business School graduate also managed to found 2 start-ups, including a social network later sold to Le Figaro group. In 2005, he joined Google to be Head of Sales Operations for Southern Europe.

  • Jean Neltner Managing Director, Business Development & Partnerships

    A true expert in online business development, Jean has worked in all sectors: finance, technology, CPG, B2B, etc. Before co-founding fifty-five, this EM Lyon Business School alumnus participated in the rapid growth of the Internet sector as Business Development Director at Lycos, Infonie and Egg. He then became Head of Strategic Partnerships for Southern Europe at Google, where he met his future partners.

  • Antoine Denoix Program Manager

    After graduating from HEC Paris, Antoine started working in the insurance sector before joining the Entertainment company Pathé. He then became part of the YouTube and Display team at Google and wrote a book on affiliate programs: L’Affiliation : bâtir, administrer et réussir un programme efficace (Dunod 2010). Drawing on his consulting experience at fifty-five, he published a second book: Webanalyse, des données à l'action (Dunod 2013).

  • Nicolas Beauchesne Managing Director, Business Development & Staffing

    Over ten years in the Internet sector turned Nicolas into an expert in new ad formats and e-commerce. He started at Vivendi Universal after graduating from ESCP Europe, before becoming Deputy Executive Director at Photoways.com. He then joined Google, where he developed the Adwords program in the media and entertainment sector, before becoming Head of Media Solutions to coordinate the launch of the YouTube and Google Display program.

  • Alan Boydell Data Insights Director

    In his many years as Google Analytics Manager for Southern Europe, Alan became a well-recognized expert in web analytics and testing. This Scottish academic with two M.A.s to his name is the author of the blog “The Analytics Factor”, and co-wrote the first French user guide for Google Analytics (Pearson 2012). He left Google to found Keymetrics, Keyade’s branch specialized in web analytics and testing before co-founding fifty-five.

  • Mats Carduner CEO

    Mats's journey online began in 1995: after working at L’Oréal in the Consumer Division, he joined Infonie, Havas Interactive Publishing, Monster, and then Google, where he was Managing Director for France & Southern Europe from 2004 to 2010. These busy years did not weaken his taste for entrepreneurship; in addition to fifty-five, this HEC Paris graduate also co-founded Coopt In, a social network later sold to Le Figaro group.

  • François Costa de Beauregard Program Manager

    After graduating from Sciences-Po Paris and Paris Dauphine University, François started working at L’Oréal before changing careers and joining Google where he was in charge of the retail accounts. He then put his expertise in SEM and web analytics to the service of Keyade and participated in the creation of Keymetrics, the agency branch specialized in web analytics and web testing.

News & Events


  • GESTE, Technical & Legal Aspects of Data Collection, Paris

    This training aims at helping publishers better manage their data collection, and be compliant with European privacy regulations.
    Serge Descombes (Data Insights Manager) and Guillaume Coulomb (Senior Data Analyst) will be sharing fifty-five's expertise.
    Register here
  • fifty-five, AB Tasty & Advalo, DMP Morning Session, Paris

    How can you reconcile and activate your data through a DMP to improve on-site customer journeys ?
    fifty-five, AB Tasty and Advalo are hosting this event dedicated to the retail industry. We will share relevant use cases, best practices and specific examples, including testimonies of Guy Degrenne and Korben - Groupe Beaumanoir.
    Register here
  • Advertising Week Europe, London

    Now in it’s fourth year in Europe, Advertising Week is a hybrid of inspiring thought leadership with legendary entertainment and special events that celebrate the industry and its people.
    Our CEO Mats Carduner will speak in at the Data Congress, during the panel session "The Science and Creativity Formula".

    More information
  • IAB Data-Marketing Morning Session, Paris

    How can we build a data-driven advertising ecosystem?
    Organised by IAB France, this morning session will tackle topics like data privacy regulations, new consumer habits, using 3rd party data to enrich 1st party data...
    Mike Bettan, Senior Media Analytics Manager at fifty-five, will share his expertise on cross-device data reconciliation.
    More information
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See event & press history

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If you’re passionate about the internet revolution, digital marketing and data, if you’re creative with a methodical mind, always eager to learn and build together, come and join us! Have a look at our openings below and get in touch.

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