40%
user adoption
Ralf Herzel — Product Lead, Berlin. Fintech, music, gaming.
A compliant, approachable staking flow built from zero research to public release.

A searchable index of 400+ articles on discovery, strategy and execution.

My debut novel — published in German, available on Amazon.

A no-fluff spreadsheet course for product people.

A hand-curated list of gifts for the people you tolerate most.
Eight years shipping for millions across fintech, music, gaming.
Outside work: wrote a novel, teach spreadsheets, cook well enough.