Ryan Kessler

CEO

Seattle, Washington, United States14 yrs 9 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Expert in statistical methodologies for A/B testing.
  • Strong collaboration with engineering teams.
  • Proven track record in data-driven decision making.
Stackforce AI infers this person is a Principal Economist specializing in E-commerce analytics and statistical methodologies.

Contact

Skills

Core Skills

EconometricsStatistical Methodologies

Other Skills

PythonSQLRDecision TheoryPL/SQLStataJavaC++

About

I am a Principal Economist at Amazon, where I develop statistical methodologies to improve experimentation and data-driven decision making at scale. My recent work has focused on three key areas in the context of A/B testing: - Estimation of treatment impacts: Developing new estimators of impacts that balance performance benefits against implementation costs - Improving launch decisions: Developing decision-theoretic frameworks to optimize launch decisions across the company, taking into account company risk preferences - Methodology validation: Developing approaches to evaluating the performance of A/B testing methodologies (including estimators and decision rules) that don't require strong distributional assumptions Across all workstreams, I collaborate closely with engineers to build statistical methodologies into scalable production systems that can be used across all of Amazon

Experience

14 yrs 9 mos
Total Experience
2 yrs 11 mos
Average Tenure
5 yrs 10 mos
Current Experience

Amazon

4 roles

Principal Economist

Promoted

Oct 2025Present · 7 mos · Seattle, Washington, United States

  • Weblab (Amazon’s A/B testing platform)
EconometricsPythonSQLRStatistical Methodologies

Senior Economist

Promoted

Jul 2022Oct 2025 · 3 yrs 3 mos · Seattle, Washington, United States

  • Weblab (Amazon’s A/B testing platform)

Economist II

Promoted

Jul 2021Jul 2022 · 1 yr · Seattle, Washington, United States

  • Weblab (Amazon’s A/B testing platform)

Economist I

Jun 2020Jun 2021 · 1 yr · Seattle, Washington, United States

  • Weblab (Amazon’s A/B testing platform)

Federal reserve bank of boston

2 roles

Research Intern

Oct 2019Jun 2020 · 8 mos · Greater Boston Area

Research Assistant

May 2018Jul 2019 · 1 yr 2 mos · Greater Boston Area

  • Research assistant to senior economist and policy advisor Paul Willen

Amazon

Economist Intern

Jul 2019Sep 2019 · 2 mos · Greater Seattle Area

Brown university

Research Assistant

May 2015Jul 2018 · 3 yrs 2 mos · Providence, Rhode Island Area

  • Research assistant to professor Jesse Shapiro

The university of chicago booth school of business

Research Assistant

Jun 2013Aug 2014 · 1 yr 2 mos · Greater Chicago Area

  • Research assistant to professors Matthew Gentzkow and Jesse Shapiro

Federal reserve bank of boston

Research Assistant

Jul 2010Jun 2013 · 2 yrs 11 mos · Greater Boston Area

  • Research assistant to senior economist and policy advisor Kathy Bradbury

Education

Brown University

Doctor of Philosophy - PhD — Economics

Jan 2015Jan 2020

Brown University

Master of Arts - MA — Economics

Jan 2014Jan 2015

Harvard University

Non-degree student — Mathematics and Statistics

Jan 2011Jan 2012

Drake University

Bachelor of Arts - BA

Jan 2006Jan 2010

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