Analytics Debugger
David Vallejo is a strong technical analytics engineer known for his work around Google Analytics, Google Tag Manager, server side tagging, privacy and debugging tools. Through Analytics Debugger and his own writing, he helps analysts, developers and marketers understand whether tracking is actually working as intended. His strength is implementation quality. He focuses on the details that determine whether data can be trusted, including events, parameters, payloads, browser behavior and technical validation. In a GA4 environment where small setup errors can distort reporting, that kind of engineering based expertise is highly valuable.