Jeffrey N.

Attribution & Integration Specialist | Meta CAPI, GA4, Server-Side

I help businesses fix broken tracking, attribution issues, and platform integrations. Most of the work I do is in the middle of a tech stack: websites, ad platforms, analytics tools, CRMs, CDPs, eCommerce platforms, databases, and custom APIs. If two systems need to share data, or if the data being reported does not match what is actually happening, I can usually help figure out why. I am a full-stack engineer with 13+ years of experience building and maintaining production systems. I work across website code, checkout flows, GTM, server-side tracking, APIs, webhooks, databases, cloud infrastructure, and reporting. I am also the lead developer for ONNO, a multi-million-dollar eCommerce brand, where I built and maintain the storefront, tracking setup, server-side events, attribution flow, and data pipelines. Common issues I work on: Meta Ads is under-reporting purchases or leads Meta CAPI is installed, but deduplication or event match quality is not right GA4 purchases, leads, or key events are missing or inaccurate Google Ads conversions do not match backend sales Shopify or WooCommerce tracking broke after a site, theme, plugin, or checkout update GTM tags are firing twice, not firing at all, or sending the wrong data Segment, HubSpot, Klaviyo, Salesforce, or another platform is receiving incomplete or incorrect data Two systems need to sync, but the native integration is limited or does not exist Reports do not line up with actual sales, leads, or customer activity A Zapier, Make, or n8n automation mostly works, but fails in edge cases How I can help: Attribution and tracking audits I trace the data from the website through GTM, GA4, Meta, Google Ads, server-side tracking, checkout, backend systems, and reporting. The goal is to find where the data is getting lost, duplicated, or changed. Meta CAPI and server-side tracking I build and troubleshoot Meta CAPI, server-side GTM, Stape, GA4, Google Ads Enhanced Conversions, TikTok events, and custom server-side event flows. I focus on clean events, reliable deduplication, and better first-party data. Platform integrations I connect platforms using native integrations, Zapier, Make, n8n, webhooks, REST APIs, or custom code. This can include websites, CRMs, CDPs, ad platforms, eCommerce stores, databases, internal tools, and reporting systems. eCommerce tracking and data flows I work with Shopify, WooCommerce, WordPress, and custom checkout flows. I can help track purchases, checkout steps, customer data, lead events, cart activity, and ad platform conversions. Custom API and webhook work When the standard integration is not enough, I can build the missing piece. That may be a webhook handler, API connection, data transformation, middleware, event router, backend script, or lightweight internal tool. Reporting and data cleanup I help clean up duplicate events, missing parameters, broken UTMs, inconsistent customer IDs, bad attribution, and mismatches between GA4, ad platforms, CRMs, CDPs, and backend sales data. Tools and platforms I work with: Meta CAPI, Facebook Pixel, Google Ads Enhanced Conversions, GA4, GTM, server-side GTM, Stape, Segment, HubSpot, Salesforce, Klaviyo, Shopify, WooCommerce, WordPress, BigQuery, Looker Studio, Zapier, Make, n8n, REST APIs, webhooks, AWS, GCP, and custom code. Why clients work with me: I am not just looking at one tag or one platform. Tracking and integration problems usually involve several systems at once, so I look at the full path the data takes. Because I am a full-stack engineer, I can usually debug past the surface-level setup and get into the actual code, API calls, payloads, server logs, and data flow when needed. If your tracking is off, your attribution does not make sense, or your platforms are not syncing correctly, send me a message with what is going on. I can help find where it is breaking and what it would take to fix it.