Freelancer profile translated to English.
Back to original languageAbout Romain
🎯 Consultant Analytics & Tracking | GA4, GTM, Matomo, Piano, Dataviz
Web Analytics & Tracking Consultant with over 10 years of experience, I support start-ups, scale-ups, and large corporations in setting up, optimizing, and utilizing their digital data to drive business performance and user experience.
Expert in Google Analytics (GA4), Google Tag Manager, Matomo, Piano, Piwik Pro ecosystems, and data visualization tools (Looker Studio, Tableau), I am involved in both technical (tracking, dataLayer, server-side) and strategic (KPIs, reporting, CRO, decision support) missions.
Accustomed to working with product, marketing, data, and tech teams, I can adapt to complex and international environments, with a strong focus on quality, pedagogy, and documentation.
🧠 Key Expertise
✅ Web Analytics & Tracking
GA4, Google Analytics 360, Google Tag Manager (GTM), Matomo, Piano Analytics, Piwik Pro, Tag Commander, Tealium, Server-Side GTM
✅ Tagging Plans & Data Layer
– Design of comprehensive tagging plans
– Technical specifications for developers
– Tracking implementation and testing
– GDPR / CMP compliance
✅ Data & Reporting
– Looker Studio / Data Studio
– Tableau
– BigQuery, SQL, GCP
– Business-oriented decision dashboards
✅ CRO & User Experience
– Analysis of user journeys
– A/B testing
– Conversion rate optimization
– Data-driven UX analyses
French
Native or bilingual
Can work on-site
Paris 19e Arrondissement (up to 50km)
Experience
- L'Oréal SA - L'Oréal FranceLead TrackingApril 2025 - January 2026 (9 months)Clichy, FranceContext:As part of the management and deployment of digital services on L'Oréal's web and app environments, managed by the Niji teams, we also complement our service by implementing, monitoring, and ensuring the quality of tracking.Methodology:The tracking manager works transversally with the service managers representing the different country/brand pairs and centralizes tracking and dashboarding requests.
- Tracking: Implement robust and accurate tracking solutions to capture essential data.
- Monitoring & Quality: Ensure regular monitoring and verification of the quality of collected data.
- Dashboarding: Create clear and relevant dashboards for a synthetic and analytical view of performance.
- APRRAnalytics ConsultantRETAIL (LARGE RETAILERS)May 2024 - Today (2 years and 1 month)Context:APRR, a subsidiary of Eiffage, selected Niji to support them in all of the Fulli brand's "above the line and below the line" communication.Niji is therefore responsible for optimizing the site strategy, managing paid acquisition campaigns, as well as redesigning tracking and migrating the public site and customer area to Piano Analytics server-side.Methodology:
- In-depth analysis of needs, aiming to identify crucial data for achieving business objectives. We chose the partner Addingwell for optimal integration of servers and tracking tools. The intervention followed these steps:
- Analysis and planning: identification of objectives and choice of tools
- Configuration and security: Infrastructure setup and tool integration
- Implementation and testing: Tool configuration and testing
- Deployment and optimization: continuous monitoring and analysis of collected data
- EngieCRO ConsultantMay 2024 - Today (2 years and 1 month)Paris, FranceContext:
- Following the installation of ContentSquare in early August 2024, Engie Green wanted a first overview of the performance of their site's pages and forms to identify obstacles to conversion and propose concrete solutions to improve user experience and conversion rates.
- Mission:
- Detailed analysis of performance and interactions (exposure rate, click rate, recurrence, scroll, session replay) on key pages in the conversion process, forms, and eligibility test funnels for Engie Green offers.
- Identification of the main friction points on form steps.
- Proposal of CRO recommendations to optimize the presentation of information and user navigation.
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Education
- Master of Science, Entrepreneurship/Entrepreneurial StudiesToulouse Business School (TBS)2011Mastère Spécialisé, Entrepreneurship/Entrepreneurial Studies
- Ruby Developer TrainingLe Wagon2014Formation développeur ruby