Ryan Kessler
Principal Economist at Amazon
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolRyan Kessler is a Principal Economist at Amazon with eight years of experience building statistical methodologies and production-grade A/B testing systems that scale across the company. He designs new estimators that balance impact and implementation cost, develops decision-theoretic launch frameworks that incorporate organizational risk preferences, and champions validation approaches that reduce reliance on strong distributional assumptions. His work sits at the intersection of economics, statistics, and engineering, and he regularly partners with software teams to operationalize research into Weblab and broader experimentation infrastructure. A PhD economist with a background in household and public finance, he brings academic rigor from Brown and applied policy experience from the Federal Reserve Bank of Boston to solve high-stakes product questions. Colleagues describe him as someone who thinks deeply about both estimation theory and the practical trade-offs of deploying it at Amazon scale.
8 years of coding experience
8 years of employment as a software developer
Doctor of Philosophy - PhD Economics, Doctor of Philosophy - PhD Economics at Brown UniversityNon-degree student Mathematics and Statistics, Non-degree student Mathematics and Statistics at Harvard UniversityBachelor of Arts - BA Summa cum laude Quantitative Economics and Mathematics, Bachelor of Arts - BA Summa cum laude Quantitative Economics and Mathematics at Drake University
Github Skills (12)
sup8
simultaneous8
murmurhash5
hash4
linear-models4
stata4
python3
cpython3
hash-functions3
gmm2
regression2
python-extension1
Programming languages (3)
Github contributions (5)
ryanedmundkessler/simultaneous_confidence_bands
Jan 2019 - Jun 2019
Contributions:49 commits, 50 pushes, 1 branch in 4 months
ryanedmundkessler/gaussian_empirical_bayes
Jan 2019 - Jan 2022
Contributions:67 pushes, 1 branch in 3 years
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