Worked on the ArthurSeche/eleve1 repository to implement a Global Google Tag Manager integration across six key HTML pages, focusing on standardizing web analytics for improved data collection and funnel visibility. Leveraged front end development skills to update confirmation, contact, root, hello, and product pages, embedding GTM scripts directly into the HTML to enable consistent cross-page tracking. Maintained code quality and traceability by making focused, commit-tracked instrumentation changes. This work established an analytics-ready frontend, laying the foundation for future data-driven decisions and dashboards, and ensured that analytics data could be reliably collected for conversions and user engagement analysis.