What you’ll be doing

Measurement architecture and implementation

• Audit GA4 properties end to end — data streams, key events, custom dimensions and metrics, channel groupings, cross-domain configuration, internal and staging traffic exclusion, attribution settings and data retention.
• Rebuild and configure GA4 to a documented standard, including e-commerce and enhanced measurement.
• Own GTM web containers: audit, restructure, naming conventions and governance, trigger and variable design, and disciplined version control and publishing.
• Design and implement server-side GTM — hosting via Stape, Addingwell or GCP, custom clients and tag transports, and phased migration from client-side without breaking data continuity.
• Diagnose measurement failures: duplicate transactions, inflated user counts, misfiring tags, attribution gaps and cross-platform discrepancies, using live debugging, BigQuery and platform interfaces.

Consent and compliance

• Audit, configure and rebuild consent management platforms – OneTrust, Cookiebot, Civic and similar – including cookie catalogues, categorisation and blocking behaviour.
• Implement and validate Google Consent Mode v2 across both client-side and server-side environments.
• Manually audit hard-coded tags across client sites to confirm they genuinely respect consent. This is the work most audits skip, and it is where the real exposure sits.
• Maintain cookie and tag registers, and support clients on PECR and UK GDPR obligations alongside their legal and compliance teams.

Paid media measurement

• Audit, build and validate conversion tracking and pixels across Google Ads, Meta, TikTok, LinkedIn, Microsoft Ads and affiliate platforms.
• Implement enhanced conversions, Meta Conversions API, TikTok Events API and equivalent server-side event flows.
• Resolve deduplication, event match quality and consent-driven signal loss so that automated bidding is working from data we trust.
• Work directly with our paid media teams to translate measurement problems into campaign decisions, and vice versa.

Data and CRM integration

• Integrate Salesforce with Google Ads and GA4 for offline conversion import and closed-loop reporting.
• Extend the same approach to Microsoft Ads, LinkedIn and other platforms using Zapier, native connectors or custom endpoints.
• Configure and use BigQuery exports for validation, reconciliation and reporting.

App measurement

• Audit and implement app tracking across Firebase and GA4, including event taxonomy and parameter design.
• Handle App Tracking Transparency and in-app consent, and audit SDK behaviour against the consent state.
• Work with mobile measurement partners on attribution setup, SKAdNetwork and deduplication against web activity.

Specification, QA and documentation

• Write bespoke data layer specifications that development teams can build from without coming back with questions.
• Run structured QA before and after every release, with a documented test plan rather than a spot check.
• Produce audit reports and implementation documentation that clients keep and actually use.
• Set and maintain the internal standards, templates and naming conventions the wider team works to.

What you’ll bring

Essential

• Hands-on implementation experience with GA4 and Google Tag Manager, in an agency, consultancy or complex in-house environment.
• Demonstrable server-side tagging experience.
• Strong working knowledge of consent management and Consent Mode v2, and the confidence to audit tag behaviour manually rather than trusting a vendor dashboard.
• Conversion tracking experience across major ad platforms.
• Ability to write clear technical specifications a developer can build from.
• Able to own a project plan, hold a timeline and flag risk early.

Desirable

• CRM-to-ad-platform integration, particularly Salesforce, and familiarity with tools like Zapier for the platforms without native connectors.
• App measurement: Firebase, GA4 for apps, and any of the major MMPs (Branch, AppsFlyer, Adjust).
• Experience running training sessions or workshops for non-technical audiences.

We can offer you a dynamic, friendly, forward-thinking work environment, a competitive salary, and great employee perks.  You can work from home or work in our Leeds-based office – the team are both UK-based and international. We embrace flexible working, and everyone works a 4-day week – we work efficiently and effectively to have a longer weekend. 

We live by our values of transparency, transformation and teamwork and we’re looking for the right person to join our team. 

At Modo25/ASK BOSCO®, everybody is invited with open arms.

We believe that fostering an inclusive and fair work environment is at the heart of our mission. As an equal opportunity employer, we embrace individuals from all walks of life, irrespective of race, colour, nationality, ethnicity, religion, national origin, sexual orientation, age, marital or family status, disability, gender identity or expression or any other legally protected status. We strive for a culture that celebrates and incorporates diverse backgrounds and experiences.