Senior Implementation Engineer

About WPP Media WPP is the trusted growth partner for the world’s leading brands. With exceptional talent, trusted data and intelligence, and world-class partnerships – all united by our pioneering agentic marketing platform, WPP Open – we help clients navigate change, capture opportunity, and deliver transformational growth. WPP Media is WPP's AI-driven media operating unit, bringing together media, data, and partnerships to deliver creative personalisation at scale. Connected through WPP Open and powered by Open Intelligence, clients see exactly where, how, and why their media investment is working. For more information, visit wppmedia.com . About WPP Media WPP is the creative transformation company. We use the power of creativity to build better futures for our people, planet, clients and communities. For more information, visit wpp.com. WPP Media is WPP’s global media collective. In a world where media is everywhere and in everything, we bring the best platform, people, and partners together to create limitless opportunities for growth. For more information, visit wppmedia.com At WPP Media, we believe in the power of our culture and our people. It’s what elevates us to deliver exceptional experiences for both our clients and each other. In this role it will be critical to embrace WPP & WPP Media’s shared core values: Be Extraordinary by Leading Collectively to Inspire transformational Creativity. Create an Open environment by Balancing People and Client Experiences by Cultivating Trust. Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise. We're looking for a Senior Analyst to own end-to-end tracking implementation across web and app properties for our client portfolio, from tagging architecture through to reporting and root-cause diagnosis when data goes wrong. This is a hands-on, technical analytics role: you'll be the person who makes sure the data clients and internal teams rely on is actually accurate. Key Responsibilities Tagging & Tracking Implementation Implement and maintain Google Tag Manager (GTM) containers (both client-side and server-side) across client properties Implement and troubleshoot marketing/ad platform pixels and scripts (CM360, Meta Pixel, Snap Pixel, TikTok Pixel, or similar), ensuring accurate campaign-level tracking and tag firing across channels Configure and QA Google Analytics 4 (GA4) event tracking, custom dimensions/metrics, and conversion events Implement Meta Conversions API (CAPI) for server-side event tracking, ensuring accurate deduplication against Pixel data Set up and manage Google Tag Gateway (GTG) implementations for first-party tag serving via CDN, improving signal accuracy against ITP/ad-blocker data loss Implement and configure Mobile Measurement Partner (MMP) SDKs (e.g. AppsFlyer, Adjust, Branch) for app attribution and in-app event tracking Maintain tracking taxonomy consistency across web and app, and own the central documentation (data layer specs, event dictionaries, naming conventions) Reporting Build and maintain recurring performance and attribution reports/dashboards for client and internal stakeholders (GA4, Looker Studio, Excel/PowerPoint) Translate raw tracking data into clear, actionable insight for marketing and client teams Automate recurring reporting workflows to reduce manual turnaround RCA & Implementation Analysis Diagnose and resolve tracking discrepancies (e.g. unattributed / "(not set)" sessions, cross-platform data mismatches) Conduct root cause analysis on data quality issues across web and app implementations Run periodic implementation audits (GTM container health, event QA, CAPI match-rate checks, MMP SDK verification) and deliver clear findings and fixes Requirements 3+ years in web/app analytics, tagging, or marketing technology (agency or in-house) Hands-on expertise with GTM (client-side and server-side) and GA4 Practical experience with Meta CAPI or other server-side conversion APIs Working knowledge of Google Ta…