Machine Learning Scientist, Barcelona

Machine Learning Scientist
Are you interested in changing how Amazon does marketing - moving beyond platform-optimized broad reach to campaigns that find the right customer, at the right moment, using Amazons unmatched 1P data?

We are seeking an Applied Scientist to join PRIMAS (Prime Marketing Analytics and Science). In this role, you will design and run the experiments that answer the foundational question for EU marketing: does adding 1P audience signal on top of Value-Based Optimization (VBO) improve marketing efficiency - and if so, for which customer cohorts, on which surfaces, and at what scale?

Amazons current marketing model is largely platform-led: we set objectives and let platforms optimize toward conversion. This approach works well for broad acquisition but systematically underserves lifecycle goals - it cannot distinguish between a Bargain Hunter who will never pay full price and a high-potential customer one nudge away from becoming a Prime member...