Wojciech Seweryn

I turn data into decisions - focusing on Optimizely

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© 2026 Wojciech Seweryn. Privacy-first - no cookies, no tracking. Details

I build data-driven personalization and experimentation for a living:

Optimizely, GTM, dataLayer, event tracking - the whole measurement stack.

This blog is the exception - no cookies, no trackers, no tags. Just words.