Hi! Thank you for visiting my website.
I am a Senior Economist with over five years of experience building causal inference and experimentation systems in production. My work focuses on incrementality measurement, A/B testing, and causal machine learning, with applications to pricing and marketing decisions in large-scale marketplaces.
I currently work on the Amazon Private Brands Pricing Science team. Before that, I worked in Amazon Ads and AWS, where I built models and systems to measure and optimize the impact of marketing and sales strategies.
Before joining Amazon, I worked on research projects at the World Bank and at the Rhode Island Innovative Policy Lab. At the World Bank, I co-authored a paper with David McKenzie on the relationship between self-employment and migration in developing countries.
I received my PhD in Economics from Brown University in 2021. My dissertation, later published in the Journal of Development Economics, studies how political connections affect the allocation and performance of public procurement contracts in Ecuador, combining tools from industrial organization and development economics.
Email: samuele_giambra@alumni.brown.edu