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Antoine Szalewski Email & Phone Number
Founder and CEO
at
mediaROI
1 work email found
@mediaroi.io
LinkedIn matched
✓ Verified Jul 2026
4 data sources
Profile completeness 100%
Current company
Role
Founder and CEO
Location
Courbevoie, ÎLe-De-France, France
Company size
Who is Antoine Szalewski? Overview
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Quick answer
Antoine Szalewski is listed as Founder and CEO at mediaROI, a with 3 employees, based in Courbevoie, ÎLe-De-France, France. AeroLeads shows a work email signal at mediaroi.io and a matched LinkedIn profile for Antoine Szalewski.
Antoine Szalewski previously worked as Founder & CEO at Mediaroi and Head of Measurement, Insights & Analytics, Global Client and Agency Solutions at Google. Antoine Szalewski holds Disruptive Strategy from Harvard Business School Online.
Company email context
Email format at mediaROI
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{first}@mediaroi.io
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AeroLeads found 1 current-domain work email signal for Antoine Szalewski. Compare company email patterns before reaching out.
Profile bio
About Antoine Szalewski
Drawing on 20 years of experience in the media industry, working with major media agencies and Google, I have repeatedly observed that advertisers struggle to measure the ROI of their media investments in a simple, effective, and cost-optimized manner.That's why I created mediaROI, a platform for measuring and optimizing media mix, enabling advertisers to gauge the effectiveness of their advertising campaigns and optimize their media investments.
Listed skills include Marketing, Media Strategy, Media Buying, Media Planning, and 21 others.
Current workplace
Antoine Szalewski's current company
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Mediaroi
11 roles
Antoine Szalewski work experience
A career timeline built from the work history available for this profile.
Founder & Ceo
CurrentmediaROI helps advertisers to maximize the efficiency of their marketing strategy based on the Unified Marketing Measurement methodology (based on Marketing Mix Modeling + AI).mediaROI's MMM enables advertisers to know the media contribution, ROI, and saturation of their advertising campaigns.Based on these insights, mediaROI provides an optimized media mix recommendation to enhance the cross-media ROI of advertisers and/or allows advertisers to evaluate their future media mix from our AI-powered simulator. Advertisers can access their results on a dedicated platform: www.mediaROI.io
Dec 2023 - Present
Head Of Measurement, Insights & Analytics, Global Client And Agency Solutions
- Manage & Develop a team of Global Measurement, Insights & Analytics Leads with specialty focus areas including but not limited to: Media Measurement, Storytelling / Brand Insights, Data Analysis, Account Reporting.- Engage proactively on analytical and measurement/insights priorities for key Google clients: L'OREAL, NESTLE and LVMH- Lead relationships with key client measurement stakeholders. Collaborate on developing and improving client tools to monitor executional excellence. - Engage in large scale Thought Leadership projects appropriate for client and C level engagements.
Jul 2022 - Jul 2023
Senior Global Client Lead, Beauty & Luxury, Large Customer Sales France
- Partnership with CHANEL (Global), HERMES (Global), ESTEE LAUDER (EMEA), L'OCCITANE EN PROVENCE (Global), SHISEIDO (EMEA) and their marketing services agencies to support their digital transformation- Sales team support : business plan elaboration, sales quota estimation, mentorship- Internal and External Coaching dedicated to career development
Jul 2018 - Jun 2022
Agency Lead, Mid-Market Sales France
Management of sales team @Google:- Recruit, retain and lead a team of 8 people: 2 Business Development Managers and 6 Agency Account Strategists, to ensure improved business growth, high agency satisfaction and enhanced portfolio health.- Coach a team and help them engage with stakeholders in agencies. Build and actively manage effective long-term agency planning process.- Deliver business growth, engagement and client satisfaction targets for a portfolio of top agencies in France.
Apr 2017 - Jun 2018
Business Development Manager, Mid-Market Sales France
Drive business growth by working closely with French Media Agencies:- Build partnerships with agency C-Level and key advertisers (Joint Business Plans)- Identify growth opportunities within agency portfolio- Demonstrate the strength of our Search and Branding Solutions: Google + YouTube + GDN- Collaborate on media strategies by capitalising on my previous agency experiences and leveraging Google best-in-class tools and products- Coordinate with the other teams at Google to deliver the best customer performances.
Jun 2015 - Mar 2017
Head Of Multiscreen @ Plus Agency For Chanel
Management of TV and Digital buyers team.TV, Digital, Cinema and Sponsoring media buying and strategy for WERTHEIMER GROUP (CHANEL, ERES & BOURJOIS)Multiscreen recommendations for Mindshare competitions.Multiscreen trainings for Mindshare TV buying team.
Jan 2014 - May 2015
Multiscreen Strategist
Monitoring and Analysing multiscreen media owners offers to integrate innovative solutions in multiscreen recommendations for Starcom clients.Creation of multiscreen mediaplanning tools: MDO (Multi Device Optimizer) and DPO (Digital Print Optimizer)In charge of TV and Digital media buying for COCA-COLA: recommendations, negotiations. Dealing Catch’Up ratecard negotiations for Starcom clients.Multiscreen recommendations for competition (win of Groupe La Poste in 2013)
Aug 2012 - Dec 2013
Tv Media Buying Lead
Management of a 6 TV buyers team.TV media buying and strategy for COCA-COLA, SAMSUNG, WARNER BROS, HONDA, CASTORAMA, NUMERICABLE: recommendations, negotiations.TV recommendations for competition (win of Coca-Cola in 2010, Warner in 2011, Novartis in 2012). Integration of video online buying and TV sponsoring.
Apr 2010 - Jul 2012
Tv Media Buying Manager
Management of a 2 TV buyers team.TV media buying for APPLE, E.LECLERC, KIA, SONY MUSIC, SONY PICTURES, WRIGLEY, AXA, BWIN: recommendations, negotiations, financial tracking and billing.
Jul 2006 - Mar 2010
Jan 2003 - Jun 2006
5 education records
Antoine Szalewski education
Disruptive Strategy
Harvard Business School Online
Level 1 Accreditation - International Coaching Federation
International Mozaik
Multimedia Design
University Of Birmingham
Master, Marketing B To B
Tbs Education
Dut Techniques De Commercialisation, Marketing
Iut De Sceaux
FAQ
Frequently asked questions about Antoine Szalewski
Quick answers generated from the profile data available on this page.
What company does Antoine Szalewski work for?
Antoine Szalewski works for mediaROI.
What is Antoine Szalewski's role at mediaROI?
Antoine Szalewski is listed as Founder and CEO at mediaROI.
What is Antoine Szalewski's email address?
AeroLeads has found 1 work email signal at @mediaroi.io for Antoine Szalewski at mediaROI.
Where is Antoine Szalewski based?
Antoine Szalewski is based in Courbevoie, ÎLe-De-France, France while working with mediaROI.
What companies has Antoine Szalewski worked for?
Antoine Szalewski has worked for Mediaroi, Google, Mindshare, Starcom Mediavest Group, and Omd France.
How can I contact Antoine Szalewski?
You can use AeroLeads to view verified contact signals for Antoine Szalewski at mediaROI, including work email, phone, and LinkedIn data when available.
What schools did Antoine Szalewski attend?
Antoine Szalewski holds Disruptive Strategy from Harvard Business School Online.
What skills is Antoine Szalewski known for?
Antoine Szalewski is listed with skills including Marketing, Media Strategy, Media Buying, Media Planning, Digital Strategy, Ad Serving, Ad Exchanges, and Digital Media.
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