At Hostelworld.com, I own marketing analytics strategy and a EUR 35M annual Google Ads budget. I shifted 15% of annual acquisition spend toward upper-funnel channels using marketing mix modelling and incrementality testing.
I built the marketing analytics function at Hostelworld.com from zero, including core data models, pipelines, uplift measurement and an A/B testing framework. That work enabled EUR 3M in annual Paid Social investment, and I migrated the team from legacy SQL to dbt.
At TIER Mobility SE, I led product analytics teams and helped reduce customer fraud and failed payments by 30% through analysis of transaction data. Earlier, I contributed to a EUR 16M profitability improvement at trivago by shifting SEM strategy toward profitability.

