Freelancer profile translated to English.

Description

Your campaigns are paying for ghost data. And it's starting to show in the P&L.

I am a Marketing Data Architect & CTO at DROP, with 12+ years of experience (Claranova/Avanquest, Starfox Analytics).

My job is not to create pretty dashboards, but to transform a leaky analytics stack into a profitable decision-making core.

In 2026, relying on classic client-side GA4 is like flying blind. Between ITP 2.3, Consent Mode v2, and ad blockers, you're automatically losing a critical portion of your signals, while the CNIL is relentless (87 sanctions, >€55M in 2024).

Result: blurry ROAS, "Unassigned" everywhere, and meetings where no one agrees on the numbers.

What I do for you:

1️⃣ Reliable Measurement & ROI: Tracking overhaul (GA4 + sGTM). We stop guessing, we measure. Clarification of truly performing channels.

2️⃣ Conversion & Retention: Journey analysis, proprietary ID Graph to unify online and offline. Clear vision of LTV levers.

3️⃣ Modernized Data Core: Marketing-oriented BigQuery architectures. I optimize your queries to reduce cloud costs (often divided by 5 on my audits).

Stack: GA4 · sGTM · BigQuery · Cloud Run · Python/SQL · Dataform.

I speak CMO, Head of Growth, and Lead Dev fluently. No translator needed.

Interventions (2–6 months, Remote):

Flash Audit: Uncompromising assessment of your measurement + quantified action plan.

Architecture Overhaul: Migration to a sovereign and robust stack, including documentation.

Strategic Support: Evolving your data culture, not just your tools.

If your dashboards no longer change your decisions today, we have something to discuss.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Lille (up to 50km), Amiens (up to 50km)

Starfox Analytics
Technical Analytics Lead - R&D Manager
February 2024 - Today (2 years and 6 months)
Amiens, France
-Resolving complex challenges related to tracking and data analysis. -Advanced mastery of data collection and instrumentation (GA4, BigQuery, JavaScript) -Architect of automated and robust data pipelines (Airflow, Python, SQL..)
-Advanced data modeling and analysis for strategic insights (BigQuery, ML). -Implementation of robust data governance and privacy protection frameworks. -Building and managing cross-functional teams involving all analytics stakeholders.
Google Tag Manager Google Tag Manager Server-Side Tag Manager Tagging Plan BigQuery
Avanquest Software
TRACKING AND DATA ANALYTICS TEAM LEAD
March 2012 - February 2024 (11 years and 11 months)
Île-de-France, France
Technical partner for digital teams across 10+ brands, enhancing digital growth strategies (France, UK, Canada, Japan, Germany..)
Maintenance and development of the intranet (Sales Management, Billing, Asset Management) for entities within a leading group in dynamic asset management, intermediation, promotion, and property administration.
CHEVALIER CONSERVATION
Sales Manager
March 2006 - September 2008 (2 years and 6 months)
Directly reporting to the CEO, daily management of the IT system, customer relations, and workshop staff. Maintenance of production management software, development of a scheduler coupled with the production manager to organize delivery routes (Coldfusion/PHP/Sql Server /Java. Windows/Linux Service Link).