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GA4 Analytics Implementation Contractor

Harnham - Data & Analytics RecruitmentLondonreedpublished 10/15/2026
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Must-have:JavaScriptHTMLQA/TestSenior

Senior Analytics Implementation Consultant (GTM & Server-Side Tracking)

London | 3-month Contract | £450-500/Day | Outside IR35

This is an opportunity to join a high-performing digital measurement and implementation team during a critical period of growth and delivery. You'll take ownership of a substantial implementation backlog, contribute to complex server-side tracking projects, and help deliver key client initiatives before year-end.

The Company

They are a consultancy-led organisation delivering digital analytics, measurement, and implementation services across multiple markets. With a centralised team structure and a growing client portfolio, they support a range of enterprise-level digital transformation and tracking projects. The team operates in a fast-paced environment, balancing technical excellence with a collaborative and proactive culture.

The Role and Deliverables

  • Deliver and maintain client-side and server-side tracking implementations across multiple client accounts.
  • Support a large-scale server-side migration project within the Google ecosystem, ensuring successful delivery against project timelines.
  • Manage implementation tickets, audits, QA processes, tracking updates, and ongoing configuration requests.
  • Configure and troubleshoot tags, pixels, APIs, and conversion tracking across digital marketing platforms including Meta and TikTok.
  • Work with stakeholders to challenge requirements where necessary and recommend effective technical solutions.
  • Support multiple websites and containers, ensuring accurate tracking across complex digital environments.

Your Skills & Experience

  • Strong hands-on experience with Google Tag Manager, including server-side GTM implementations.
  • Deep understanding of digital measurement, implementation, and tag management systems such as GTM, Tealium iQ or similar platforms.
  • Experience implementing Google Analytics events, Advanced Conversions, Consent Mode, Google Gateway, and related tracking frameworks.
  • Comfortable working with custom HTML, JavaScript, and custom tagging requirements for debugging and implementation purposes.
  • Proven capability delivering end-to-end server-side tracking projects and technical implementation workstreams.
  • Strong knowledge of pixels, conversion APIs, and measurement solutions across major social platforms.
  • Experience conducting audits, troubleshooting tracking issues, and managing complex tracking requirements across multiple sites and containers.
  • Confident communicator who can explain technical approaches clearly to clients and internal stakeholders.
  • Agency experience is advantageous, although not essential.

How to Apply

If you are a technically strong implementation specialist with deep GTM and server-side tracking expertise and are looking for a high-impact freelance engagement, please apply with your latest CV.