David Harris
Staff Machine Learning Engineer at Chewy
Greater Boston United States
Summary
👤
Senior🎓
Top SchoolDavid Harris is a Staff Machine Learning Engineer with over a decade of experience applying statistical rigor and ML to drive measurable e-commerce impact, including recommendation systems that delivered a >$50M annual revenue lift and a pricing ranker that added $12M. He specializes in search and recommendation engineering, online optimization, and cold-start exploration, translating Ph.D.-level population biology and Bayesian modeling expertise into practical, production-grade solutions. At Chewy and Wayfair he led cross-functional initiatives, improved sitewide conversion, and built internal tools that accelerated stakeholder experimentation and model adoption. A mentor and hands-on leader, he blends research instincts with robust engineering (PyTorch, Elasticsearch/OpenSearch, R/Python) to ship business-critical ML at scale.
15 years of coding experience
4 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Population Biology, Doctor of Philosophy (Ph.D.) Population Biology at University of California, DavisBachelor's degree Biology General, Bachelor's degree Biology General at Washington University in St. LouisZoology/Animal Biology, Zoology/Animal Biology at Michigan State University
Stackoverflow
1,372reputation
354kreached
3answers
4questions
r
top-5%
Github Skills (140)
python10
bayesian-data-analysis10
data-manipulation10
mathematical10
deep-learning10
forecast10
scientific-computing10
r10
graphic10
dplyr10
data-retrieval10
neural-network10
stan10
scipy10
r-package10
Programming languages (11)
Github contributions (5)
davharris/rosalia
Apr 2015 - Mar 2016
Contributions:3 releases, 102 commits, 78 pushes in 10 months
noamross/tutoR
Sep 2014 - Dec 2014
Contributions:68 commits in 2 months
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