Especialista en Implementación GTM y GA4

We are seeking an experienced GTM & GA4 Implementation Specialist with a track record of delivering analytics in headless ecommerce environments (Next.js, React). The ideal candidate translates business objectives into precise measurement strategies, ensuring data integrity across multiple store views and channels. You will partner with front-end, back-end, and marketing analytics teams to implement robust data collection, validation, and reporting frameworks that support attribution, monetization, and optimization efforts throughout the customer journey.

SEEK is a multidisciplinary team blending strategy, design, and technology to deliver human-centered digital products, services, and experiences that generate real business value. We are expanding our analytics capability to support data-driven decisions across multiple storefronts (US, UK, FR) in a headless Magento + Next.js environment. This project focuses on implementing robust, accurate data tracking and analytics across all store views, ensuring data integrity for ecommerce operations, marketing attribution, and conversion optimization. The engagement involves collaborating with our development and marketing teams to deploy GA4 and GTM across dev, staging, and production, configure data layers, and establish reliable cross-domain tracking and consent-compliant measurement flows. The result will be a scalable analytics foundation that empowers reliable reporting, experimentation, and strategic insights post go-live.

• Setup and manage GTM containers for each store view (US, UK, FR) across dev, staging, and production environments.
• Integrate the base GTM script within Next.js templates and verify rendering via environment tags.
• Define and document the ecommerce data layer schema (page type, product, category, cart, transaction, currency, etc.).
• Implement ecommerce event pushes (view_item, add_to_cart, begin_checkout, purchase, etc.) within the data layer.
• Configure Google Consent Mode and GDPR/CCPA-compliant cookie banners.
• Configure GA4 configuration tags, link to correct properties, and create/test event tags for ecommerce actions.
• Implement Google Ads conversion and remarketing tags, Meta Pixel, and other marketing tags; set up cross-domain tracking where needed.
• Create GA4 properties and data streams per store view; link GTM containers to GA4 properties.
• Configure Enhanced Ecommerce, custom dimensions/metrics, and data exports (BigQuery integration considered in scope).
• Validate tag firing, event flow, and payload accuracy; ensure attribution tracking for campaigns.
• Draft and maintain a comprehensive GTM/GA4 implementation guide with data layer specs, mappings, and reporting structures.
• Establish ongoing maintenance: version control, tag audits, GA4 health checks, and alerts for anomalies.

Preferred experience with Magento 2 or other ecommerce CMS platforms, multi-store/multi-region setups, and a background in web analytics, digital marketing attribution, or data engineering. Familiarity with CI/CD pipelines, staging workflows, and GTM deployment versioning is advantageous. Strong communication and documentation skills, along with a proactive, problem-solving mindset, are essential for success in this role.