Hands-on GA4 + GTM implementation and troubleshooting Familiarity with Heap, Braze, or LaunchDarkly Good grasp of data-layer design, tag debugging, and validation workflows Experience writing or maintaining tracking specs, QA checklists, or governance documentation Familiarity with server-side tagging or event forwarding (e.g. GTM Server, Segment) Experience running QA and reconciliation between GA4, Heap, or Braze Exposure to feature flags or experimentation tools, such as LaunchDarkly