Find technical tracking failures
Programming experience helps me spot implementation errors that disappear inside dashboards.
GA4 / GTM / Server-side tracking




Good analytics is not a perfect dashboard. It is evidence you can trust and a clear next decision.
Explore servicesProgramming experience helps me spot implementation errors that disappear inside dashboards.
GA4 / GTM / Server-side tracking
I validate collection, consent, and reporting before a metric becomes a business recommendation.
Measurement plans / Consent / Validation
SQL, BigQuery, and custom reporting connect behavior to the commercial question behind it.
BigQuery / SQL / Looker Studio
Selected work
Subscription analytics
One customer appeared as several. Validating the identity model changed the lifetime-value conclusions and reordered work across acquisition, retention, and growth.
Read case studyChallenging the customer model before trusting lifetime value.

I started coding at 15, then moved through frontend and Flutter development before web analytics became the point where technology and business context met.
Today I work across GA4, GTM, BigQuery, Looker Studio, and AI. The valuable part is knowing which data matters, where it can fail, and how to explain the answer clearly.
I am based in Brno, work independently, and study Computer Science and Information Studies to keep both the technical and human sides of information in view.
More about my backgroundThe AIM framework keeps the work focused, from the first question to everyday reliability.
Map the current setup, test the collection path, and identify the failures that affect decisions.
Fix tracking, consent, and reporting around an agreed measurement plan.
Monitor data quality and evolve the setup as products, campaigns, and questions change.
“Braňo enjoys analytics, especially from a technical perspective. He handles technologies like GTM or SGTM with ease; to implement a new platform on a website, all he needs is a link to the documentation. As a bonus, he also handles project management, which is definitely not common among IT specialists.”

Freelance Web Analyst
A plain guide to Google Consent Mode’s seven signals, GTM Additional Consent Checks, and why adding extra checks to Google tags can break tracking.
Google AI Mode and AI Overviews stay inside Organic Search in GA4. Here is what the new AI Assistant channel and Search Console report actually show.
Impressions and average position look important in Search Console, but they hide more than they show. Here's why I stopped trusting them, and what to track instead.
Tell me what is unreliable, missing, or hard to explain. I will reply within 24 hours with a useful next step.