I find where your tracking breaks duplicate pixels, lost conversions, broken attribution and rebuild it so every event fires once, clean, and matched across browser and server.
Every engagement starts the same way: trace the actual network beacons, find where the signal breaks, and prove the fix with data. Here's a sample of what that's looked like.
Meta reporting was corrupted by a duplicate pixel — the Simprosys app was firing the same pixel ID alongside the native Shopify integration, with no event IDs and no valid CAPI authorization.
Confirmed it through direct network inspection, disabled the rogue source, and restored clean deduplication. Phantom purchases, $0 events, and content_type mismatches all resolved in 72 hours.
Two separate agencies had each installed their own tracking two Meta pixels, two GA4 properties, duplicate GTM tags and Google Ads had no conversion actions connected to analytics at all.
Untangled ownership of every tool, linked the client's own GA4 to Google Ads, set the purchase conversion as primary, and rebuilt the dataLayer so storefront and checkout events fire cleanly into GTM.
Meta was reporting a 0.43x ROAS and the brand was about to cut spend on campaigns that were actually profitable. The conversions were happening on Eventbrite, outside the pixel's view.
Built an Eventbrite Orders API integration in Stape with a timed delay to handle order-finalization lag, feeding real purchases back into Meta. The corrected gap analysis revealed a true ROAS near 1.37x.
Every tag was firing only on a consent event instead of All Pages meaning the vast majority of pageviews and events were never recorded. The data looked sparse for no obvious reason.
Rebuilt the trigger logic so tags fire correctly across the site, restored full event collection, and scoped follow-on work for GA4 Explorations and consent-banner compliance.
A full server-side Meta Pixel + CAPI implementation from the ground up Stape-hosted container, first-party data flow, and custom dataLayer fixes for a Webflow storefront.
Included EU/UK geo suppression to keep the setup compliant, with proper event deduplication so the browser and server sides never double-count.
A pre-launch audit and clean pixel migration for a new Shopify brand, plus a properly structured Lead event build so the account had quality conversion history from day one.
Tuned the customer-data parameters to lift match quality before the brand spent a dollar on ads.
Specialized in the technical layer most agencies outsource: getting the data right so everything built on top of it can be trusted.
Server-side conversions through Stape-hosted GTM, with event deduplication, first-party data, and match-quality tuning that survives iOS and ad blockers.
Clean event schemas, correct trigger logic, and container architecture that's maintainable — not a pile of tags nobody can read six months later.
Conversion actions imported correctly from analytics, GCLID passed cleanly through checkout, and attribution that actually matches what the store sees.
A real network-level audit — live beacons, dataLayer inspection, duplicate detection — delivered as a clear report a non-technical owner can act on.
Moving tracking off the browser and onto the server for resilience, with geo suppression and consent handling built in where it's needed.
When conversions happen outside your site — Eventbrite, external checkout, booking tools — API integrations that feed them back to the ad platforms.
I inspect the actual network beacons firing on your site — not what the dashboards claim. Duplicates, missing event IDs, and broken triggers show up immediately.
You get a plain-language report: what's broken, why it matters to your spend, and what each fix is worth. No jargon dump, no fear-selling.
Server-side where it counts, deduplicated end to end, and verified in Events Manager, GA4 DebugView, and GTM Preview before I call it done.
I re-pull the numbers after the fix so you can see the change — coverage up, phantom events gone, attribution matching the store.
If your ROAS doesn't match your bank account, or your conversions don't line up across platforms, that's almost always a tracking problem. Send me your store and I'll tell you exactly where the signal breaks.
Request a free audit → johanssen@johanssengrandoit.com