Worked on the ArthurSeche/eleve7 repository to deliver a comprehensive Google Tag Manager integration across the website, focusing on enabling unified analytics and attribution for product and marketing teams. The approach involved updating twelve HTML templates spanning seven user-facing pages, including confirmation, contact, and product pages, to ensure consistent tracking coverage. Leveraged front end development skills with CSS and HTML to implement new pages and wire up GTM tracking on all relevant user paths. Maintained a disciplined workflow with thirteen commits, emphasizing traceability and rollback capability. The work prioritized analytics instrumentation and front-end delivery, with no major bugs addressed during this period.