// who am i
Blumenfeld is a one-person analytics consultancy run by David Ulkei
Fifteen years in the measurement stack.
The path: PPC first, then Google Tag Manager the week it launched, and everything that grew out of it — dataLayer architecture, server-side tagging, BigQuery-powered dashboards, complex pipelines in Dataform.
Along the way I've built measurement for real-estate lead generation, e-commerce, and fintech — including one of Hungary's largest property platforms and the real-estate arm of the country's biggest bank.
One person is the point, not the limitation. The person who audits your tracking is the person who writes the plan and ships the fix. No account managers, no handoffs, no telephone game between sales and delivery.
Let’s talk about your measurement stack.
Tell me what you’re trying to measure and where the tracking stands today. I’ll tell you exactly what needs to happen next.