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Julien DebrielJD

Julien Debriel

Expert tracking, Server Side, Piano Analytics, GA4

€620/day
38 projects
Lille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Expert Tracking Analytics, First Party and Server Side

🚀 Senior Analytics Consultant(+15 years of experience, ex-front-end developer), specialist in analytics tracking (client-side and server-side) and tag management.

I support leading companies such as La Redoute, Matmut, ADEO (Leroy Merlin, Bricoman), Air France, Transavia, Emirates, Kenya Airways, Saudia, TravelSki, IDGroup, Grain de Malice, McCain, Palais des Thés, Rapid Flyer, Sanoflore, Juliette Has A Gun, Maison & Objets as well as recognized digital agencies (Digital Keys, Unami, Dalt, Résonéo)...

I use the best market tools daily: Piano Analytics, Google Analytics GA4, Adobe Analytics, Matomo, Google Tag Manager (GTM/sGTM), and Commanders Act.
I also master the technical implementation of marketing tags: Google Ads, Facebook CAPI, Pinterest CAPI, Snapchat, TikTok, LinkedIn Ads, and others...

🎯 Areas of expertise :

Expert Tracking: Audit, implementation, and optimization of analytics solutions (Piano Analytics, GA4, Adobe Analytics...)

Server-Side Tracking: An essential solution facing the imminent end of third-party cookies, ad blockers, and browser restrictions (Safari ITP) to maximize your advertising performance. Ensures reliable, sustainable, and RGPD-compliant data while improving the quality of marketing data. (Addingwell, Commanders Act, Stape, Taggrs...)

Tag Management: Complete and robust management of your marketing tags and tagging plans (dataLayer, Commanders Act, GTM), in client-side & server-side.

📊 Complete Analytics Project Management :

Design and management of tagging plans adapted to business objectives.

Effective coordination between technical and marketing/e-commerce teams.

Data quality audits, in-depth analyses, and strategic recommendations to ensure reliable KPIs.


🏆 Certified Piano Analytics Partner – Gold Level
🤝 Addingwell Partner – Server-side implementation expert
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Lille (up to 50km), Lille (up to 50km), Paris (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km)

Experience

  • Rossel
    Analytics Consultant - GTM / Piano Analytics
    PRESS AND MEDIA
    July 2025 - Today (1 year and 1 month)
    Lille, France
    Analytics Consultant for the Rossel group (Voix du Nord, Le Soir, Sud Info, Nord Littoral...)

    - Redesign of web & app tagging plan
    - Web analyst dedicated to the group's Engagement & Retention pillar
    - Maintenance and optimization of technical implementation (Piano, Marketing Tags)

    - Web analytics project management
    Web analytics Technical Project Management Piano Analytics Google Tag Manager Didomi
  • La Redoute
    La Redoute - Analytics Consultant - Web & App Tracking Expert
    E-COMMERCE
    October 2024 - March 2025 (4 months)
    Roubaix, France
    - Technical Analytics Consultant for website & iOS/Android applications
    - Project Management
    - Expert in Adobe Launch, Adobe Analytics Tracking
    Adobe Analytics Technical Project Management Web and Mobile Project Management Web analytics AB Tasty
  • Travelfactory - Travelski
    Analytics Consultant - Technical Implementation
    July 2023 - October 2023 (4 months)
    Wimille, France
    - Complete redesign of the dataLayer (23 custom events, 35 custom properties)
    - Project monitoring and developer support
    - Technical training
    - Testing
    - Business Analytics Consulting
    Tracking Piano Analytics Tag Management GDPR / CNIL / ePrivacy Web analytics

Reviews

5.0

Out of 18 ratings

T

Timothy

Data Filiation

Reviewed on 5/21/2025

Working with Julien was a real pleasure! On our multi-site server-side tracking project, he demonstrated in-depth expertise and great technical rigor. The collaboration was smooth and the exchanges transparent throughout the service. Thanks to his professionalism, we were able to deploy reliable and high-performing tracking, exactly as we wanted. I highly recommend Julien to any team looking for a technical expert they can count on. Thanks again!
E

Emmanuel

ADD Pub

Reviewed on 9/17/2024

A responsive and attentive provider to the requested issues. Advice and guidance based on technical and budgetary constraints. I recommend!

Recommendations

LL
PC
AU
+2
Ludovic Lenglet and 4 other people have recommended Julien

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Education

  • ULCO Information
    Université du Littoral Côte d'Opale
    2011

Certifications

  • AT internet Administration
    AT internet
    2017
  • ABTasty User Essentials
    ABTasty
    2021

Skill set

Categories