Meta Pixel/CAPI Specialist to Fix Purchase Tracking & Deduplication

We are looking for a technical Meta Pixel / Conversions API tracking specialist to audit and improve our website conversion tracking setup. We are a performing arts venue using Meta Ads, GA4/GTM, and Showare ticketing. We want to make sure our Meta tracking is set up correctly so that purchase reporting, attribution, and campaign optimization are as accurate as possible. The goal of this project is to review our current setup, identify tracking issues, fix what can be fixed, and provide clear documentation on any remaining limitations related to our ticketing platform. We need help reviewing and improving: Meta Pixel setup Meta Conversions API setup Purchase and InitiateCheckout event tracking Pixel + CAPI deduplication Event ID setup Event Match Quality Currency and value parameters Manual Advanced Matching Browser/customer parameters such as _fbp, _fbc, Meta Click ID, event source URL, user agent, and hashed customer data where available/permitted GA4/GTM tracking setup Any potential double-counting, under-reporting, or missing event data Ideal deliverables: Audit of current Meta Pixel, CAPI, GTM, and GA4 setup Recommended fixes prioritized by importance Implementation of fixes where access/platform limitations allow Confirmation that key events are firing properly Documentation of what was changed Notes on anything that requires Showare/ticketing provider support The ideal freelancer should be comfortable working in Meta Events Manager, Google Tag Manager, and GA4, and should have experience troubleshooting Pixel/CAPI tracking issues for non-standard checkout flows. Experience with ticketing platforms, event registration platforms, or third-party checkout systems is strongly preferred. This is not a general Meta ads management job. We are specifically looking for someone technical who can audit, clean up, and document our tracking implementation. Please include examples of similar Meta Pixel / CAPI tracking projects you have completed, especially any work involving conversion tracking, event deduplication, Event Match Quality improvements, or third-party checkout systems. Budget is flexible depending on whether this is a straightforward GTM/Meta Events Manager cleanup or requires deeper coordination with our ticketing provider.