Cheng L
Senior Data Scientist
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolCheng L is a senior data scientist in the San Francisco Bay Area with seven years of industry experience and a decade-plus background in physics, mathematics, statistics, and programming. He holds a PhD in Physics from The Ohio State University and moved from academic modeling and HPC work at the Ohio Supercomputer Center into applied data science roles, progressing from Data Scientist to Lead Data Scientist at Root and now Senior Data Scientist at Lyft. Cheng specializes in turning complex, simulation-grade quantitative methods into product-impacting analytics, using C/C++, Python, R, MATLAB and Mathematica to drive improvements in onboarding, claims, and customer experience. He has a track record of delivering measurable business outcomes—higher satisfaction, revenue growth, and reduced operational cost—while bridging deep technical rigor with product thinking. Curious and self-motivated, he combines quick learning with a habit of digging into underlying physics-grade models to uncover non-obvious signals in noisy data. Based in the Bay Area, he brings both research pedigree and production experience to high-scale, mission-driven data problems.
7 years of coding experience
12 years of employment as a software developer
Bachelor of Science (B.S.) Physics, Bachelor of Science (B.S.) Physics at University of Science and Technology of ChinaDoctor of Philosophy (PhD) Physics, Doctor of Philosophy (PhD) Physics at The Ohio State University
English, Chinese
Github Skills (17)
portable9
xgboost9
java9
gradient9
machine-learning9
distributed-systems9
python8
scalable8
boosting8
dask8
scala8
spark8
gbm8
dataflow8
gradient-boosting7
Programming languages (3)
Github contributions (5)
lichengphysics/PHYSICS_ColdAtomNote
May 2019 - Feb 2020
Contributions:4 commits, 3 pushes, 1 branch in 9 months
lichengphysics/adventofcode_solution
Dec 2020 - Dec 2022
Contributions:37 pushes, 1 branch in 2 years
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