Case studies

Six engagements, written at length. Each one names the constraint that made it hard, states what I would do differently, and carries the measurement basis for every figure in it. Where a basis is missing the number is missing too.

1. CS-01Babbel GmbH2023-05 to 2026Employed roleSeven data product managers, and a company that turned EBITDA positiveBuilding the data product function at Babbel from zero, cutting storage cost by 60 percent, and getting lifetime value.
2. CS-02Babbel GmbH2023-05 to 2026Employed roleThe first AI agents at Babbel, and who got them firstShipping the first internal AI agent at Babbel, then customer-facing ones, by giving engineers the tooling first and running compliance with Legal as a partner.
3. CS-03HelloFresh SE2020-06 to 2023-05Employed rolePutting $150M of data risk on the registerFounding a data management department at HelloFresh, and the difference between exposure you have mitigated and exposure you can finally see.
4. CS-04A Berlin deep-tech manufacturer2026Client engagementAI governance for a Berlin deep-tech manufacturerThe first engagement delivered as an outsider rather than an employee: AI enablement, governance posture, and the data foundations underneath both.
5. CS-05HelloFresh SE2020-06 to 2023-05Employed roleThe Data Academy: teaching a company to stop breaking its own dataA certification programme at HelloFresh that reached over a hundred people, and the sequencing mistake that cost it a year of momentum.
6. CS-06HelloFresh SE2017-04 to 2020-06Employed roleFrom one month to one weekRebuilding the architecture and the team behind operational decisions at HelloFresh, and shipping the architecture before the ownership model.