Freelancer profile translated to English.

Description

Reliable tracking won't make you sell more. Understand where you're losing your customers, if.

You spend every month on advertising. But do you really know **which campaigns are generating your sales, and which are throwing your money away**?

One of my clients came to me after a redesign. His previous agency had installed the tracking, then several hands had been on it, adjustments here and there, some correction attempts... In short, **nobody knew what was working anymore**.

I started by completely cleaning up his data collection. But digging deeper, I discovered two other problems...

First, he had been tracking the wrong metric for months: **he was making decisions based on a figure that wasn't measuring what he thought**.

Second, his campaigns were bringing in traffic, but visitors were dropping off along the way.The problem wasn't the ads, it was the site. Without tracking the entire journey, it was impossible to know why.

I extended his tracking to follow every click, from arrival on the site to purchase. Then, because GA4 drowns you in dozens of reports, I delivered a custom dashboard consolidating all his sources on a single page. **He opens his dashboard, sees what's performing and what's blocking, and acts**.

By reallocating his budget and fixing friction points, he generated **more sales at a constant budget**.

🔎 Have doubts about your data, tracking to redo or set up? Send me your site's URL. Without accessing your tools, I detect the first problems in 9 out of 10 cases. Free diagnosis, no commitment.

I'm Luc, an analytics consultant. +40 companies supported, +800 professionals trained through my webinars.

Contact me to start the project, or to guide you towards a more suitable solution. In either case, **you'll leave with a diagnosis and a clear plan within 48 hours**.

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

Propulse - Crédit Agricole : Migration Tracking & Optimisation GTM Server-Side
Google Tag Manager Consultant | Boryl
CONSULTING AND AUDITS
September 2024 - November 2024 (2 months)
Toulouse, France
📌 **Business**: Banking & Financial Services | Key Account | Lead & Account Creation

🔍 **Context**:

Propulse**, Crédit Agricole's entrepreneurial offer, undertook a **complete website redesignto improve user experience and optimize digital performance. This transition required an efficient tracking migration to ensure continuity of analysis and maximize advertising performance.

**✅ Tasks Performed**:

- Complete migration of tracking to the new site without data loss
- Advanced configuration of server-side tracking for better event control
- Integration and optimization of data flows to major advertising platforms
- Compliance with Didomi CMP for consent management

**📈 Results**:

- **Performance Monitoring**: Smooth comparison between the old and new site, allowing for a detailed analysis of the redesign's impact
- **Improved ROI & CPA**: Thanks to server-side tracking, advertising algorithms collected an increased volume of conversions, optimizing campaigns and reducing acquisition costs

**🛠️ Tools Configured**:

- Google Tag Manager Server-Side
- Piano Analytics
- Google Ads API
- Microsoft Ads
- Meta CAPI
- LinkedIn API
- TikTok API
- Didomi (CMP)
Google Tag Manager Server-Side Piano Analytics Google Tag Manager Google Ads Tracking
Superprof : Restructuration Google Tag Manager & Tracking Server-Side
Google Tag Manager Consultant | Boryl
CONSULTING AND AUDITS
May 2024 - December 2024 (7 months)
Toulouse, France
📌 **Business**: Education & Online Courses | Marketplace

🔍 **Context**:

**Superprof**, a platform connecting tutors and students, managed the tracking of 49 websites through separate GTM containers. This configuration complicated maintenance and led to data loss due to third-party cookie restrictions. To **improve tracking management and maximize data collection**, a complete restructuring and migration to server-side tracking were implemented.

**✅ Tasks Performed**:

- Merging and optimizing 49 GTM containers into a centralized architecture with 3 containers
- Implementing server-side tracking to retrieve more data and bypass third-party cookie limitations
- Configuring and enriching data flows for better advertising performance

**📈 Results**:

- **Simplified & Scalable Tracking**: 3 GTM containers now centralize all 49 sites, reducing management complexity
- **Enriched Data & Highly Optimized Campaigns**: Thanks to server-side, Superprof leverages increased data volume to boost advertising effectiveness
- **Better Performance Measurement**: Precise and reliable conversion tracking, improving advertising campaign ROI

🛠️ **Tools Configured**:

- Google Tag Manager Server-Side
- Google Analytics 4
- Google Ads API
- Criteo
- Microsoft Ads
- Meta CAPI
- Pinterest API
- TikTok API
- Snapchat API
- Axeptio (CMP)
Google Tag Manager Server-Side Google Tag Manager Google Analytics Google Analytics 4
Aroma-Zone : Audit GTM & Correctifs pour un Tracking Publicitaire Fiable
Google Tag Manager Consultant | Boryl
CONSULTING AND AUDITS
September 2023 - September 2023 (1 month)
Toulouse, France
📌 **Business**: Cosmetics & Wellness | Ecommerce

🔍 **Context**:

Aroma-Zone**, a major player in natural online cosmetics, was experiencing **data quality issueswith data sent to advertising platforms. Furthermore, its server-side configuration had technical errors and complexities that made independent tracking management difficult. A thorough audit and fixes were necessary to ensure reliable performance measurement and optimize marketing campaigns.

**✅ Tasks Performed**:

- In-depth audit of the server-side configuration to identify errors and areas for improvement
- Correction of tracking parameters to ensure reliable data transmission to advertising platforms

**📈 Results**:

- **Advertising ROI Precisely Tracked**: Aroma-Zone now has reliable data to guide its acquisition strategy
- **Optimization of Advertising Campaigns**: Corrected data enables better performance of advertising algorithms

**🛠️ Tools Configured**:

- Google Tag Manager Server-Side
- Google Analytics 4
- Google Ads API
- Microsoft Ads
- Meta CAPI
- TikTok API
- Axeptio (CMP)
Google Tag Manager Server-Side Google Analytics 4 Google Tag Manager

Check out Luc's experience

Linda

Consultant tracking & analytics (GA4 / GTM) - Odysway

Reviewed on 4/3/2026

We hired Luc to upgrade our website's tracking. He quickly understood our challenges and proposed a clear, structured, and actionable tagging plan. He provided excellent advice throughout the mission. The implementation was smooth, with always clear explanations and relevant recommendations to improve our tracking. The dashboards he created now allow us to concretely identify friction points and prioritize our optimizations. We have already highlighted several areas for improvement thanks to his work. Luc is very responsive, involved, and pleasant to work with. A real pleasure to collaborate with him, I recommend him without hesitation!