William Fetzner
Senior Data Scientist
Zebulon, North Carolina, United States
Summary
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Senior🎓
Top SchoolWilliam Fetzner is a Senior Data Scientist with 7+ years of hands-on experience turning large-scale retail and operational datasets into actionable business impact. At CVS Health he led work on safety stock optimization and demand forecasting in Databricks/PySpark and Snowflake, cutting workstream runtimes from 54 to 8 hours and contributing to an estimated $150M working capital impact. He combines rigorous statistical and ML techniques with practical engineering—binary-search algorithms, seasonality adjustments, and scalable weekly refreshes—to drive pilots that yielded multimillion-dollar margin improvements. Earlier roles span analytics, teaching, and freelance projects, reflecting both strong mentoring abilities and a knack for rapid process improvements (4x efficiency gains at Q‑Centrix). Trained in data science and biological sciences, he brings a curious, experimentally minded approach to solving business problems and translating complex results into clear operational decisions.
7 years of coding experience
5 years of employment as a software developer
Master of Science - MS Biology/Biological Sciences General, Master of Science - MS Biology/Biological Sciences General at Texas Tech UniversityBachelor's degree B.S. Biology B.A. Psychology, Bachelor's degree B.S. Biology B.A. Psychology at University of North Carolina WilmingtonData Science, Data Science at Springboard
Stackoverflow
1reputation
0reached
0answers
0questions
Programming languages (1)
Github contributions (5)
lilfetz22/gym_mtsim_forked
Apr 2024 - Dec 2024
A general-purpose, flexible, and easy-to-use simulator alongside an OpenAI Gym trading environment for MetaTrader 5 trading platform (Approved by OpenAI Gym)
Contributions:76 pushes in 8 months
lilfetz22/Running_data
Jul 2020 - Nov 2020
Personal Garmin Running Data
Contributions:2 PRs, 94 pushes, 3 branches in 3 months
garmin
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