You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Guillaume BerthierGB

Guillaume Berthier

Digital media expert, Data focused, LeadGen

€600/day
2 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Guillaume

Welcome to my profile,

After 12 years of experience in media agencies and supporting major clients, I am now putting my skills at your service as an independent.

Are you an agency or an advertiser? Do you need to quickly onboard an operational consultant within your company? Contact me.

Are you self-employed and need support for your entrepreneurial project? Let's talk about that too.

My skills cover all areas of Digital Marketing and have been strengthened by 12 years spent with numerous companies (Samsung, Fiat, Orangina-Schweppes, Clarins, Barclays, LVMH, Essilor, Blizzard, Sony Playstation...).

I have a strong ability to assimilate and understand your needs, enabling me to offer you tailor-made and effective support.

Looking forward to sharing with you soon.

#Global media strategy On&Off

#Digital media expert, innovation and DATA focused

#High expertise in coordination and project management

#High expertise in traffic acquisition, leadgen (SEA, Emailing, social media, programmatic)

#SEO, VSEO onsite & offsite

#Wordpress expert

#Website Design, UX

#Growth Hacking

#Web analyse

#Sales funnels

#Tracking

#Marketing automation
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 20km), Rennes (up to 20km)

Experience

  • Infinity Advertising
    Senior Media Trader
    RETAIL (SMALL BUSINESS)
    November 2025 - January 2026 (2 months)
    Paris, France
    Media trading on major DSPs (Xandr, The Trade Desk...)
    Social media trading (META, Google Ads, Youtube...)
    Media trading Meta Ads Google Ads Youtube Ads DSP
  • BMW Group
    LeadGen Consultant
    AUTOMOBILE
    April 2024 - February 2025 (11 months)
    Neuilly-sur-Seine, France
    Management of acquisition and performance levers in the French market (Social Media, Programmatic, Display, Emailing, SEA).
    Data visualization & performance dashboarding.
    Dashboard Google AdWords Meta Ads Programmatic Tracking
  • GB CONSEIL
    Senior Media Consultant / On&Off Communication / Digital Strategist
    DIGITAL AND IT
    March 2016 - Today (10 years and 3 months)
    Paris, France
    On&Off Media Strategy Traffic Specialist Social Media & SEA Manager SEO, VSEO Growth Hacking Web Analyst Website Designer

Reviews

5.0

Out of 2 ratings

LilaL

Lila

Alilapv

Reviewed on 5/14/2021

Guillaume is a very professional person. He adapted completely to my project and needs. Patient, expert in the field, and with excellent communication skills, he immediately gave me a very precise presentation. I am just very happy to have worked with him, I recommend him without hesitation, he will not disappoint you. Thank you Guillaume for your work.
M

Mindset

PERFANDCO

Reviewed on 5/6/2021

I have never seen such a professional freelancer, so keen on going the extra mile to achieve the objective. He functions as a true entrepreneur eager to help other entrepreneurs overcome their difficulties in his area of expertise. To be recommended without any hesitation!

Recommendations

FU
FU
FU
Former user and 2 other people have recommended Guillaume

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Master 2 Marketing and Communication Management
    ISCOM
  • Master of Economic Sciences
    University Paris-Est Marne-la-Vallée

Skill set

Categories