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Hojin Lee

@hojinlee

I build forecasting and optimization systems for capacity planning, pricing, and delivery operations.

United States
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What I'm looking for

I'm looking to build forecasting, optimization, and operational decision systems that connect production ML to capacity planning, pricing, routing, and measurable business outcomes.

At Roadie, I build production forecasting and optimization systems that guide capacity planning and operational decisions across a national delivery network. My work spans demand, driver supply, capacity, delivery reliability, pricing, matching, routing, and batching.

I connect predictive models to real operating decisions, using temporal, geographic, retail-partner, vehicle, and delivery signals to forecast volume, fulfillment risk, and route feasibility. I’ve evaluated time-series methods, tree-based models, quantile prediction, and scenario analysis while focusing on stability through seasonal peaks and changing marketplace conditions.

I also strengthen the systems around models: Python and SQL pipelines, data validation, reproducible evaluation, historical backfills, monitoring, drift investigations, retraining, and deployment coordination across AWS, Azure, Docker, Kubernetes, and CI/CD.

Earlier, I applied quantitative analysis to lending at Happy Money, Global Lending Services, and TD, network optimization at UPS, and geospatial maximal-coverage modeling in research at Georgia Tech. I bring an industrial and systems engineering foundation to building decision systems that make complex operations more measurable and actionable.

Experience

Work history, roles, and key accomplishments

Roadie logoRO
Current

Machine Learning Engineer II

Jan 2025 - Present (1 year 8 months)

Owns forecasting and optimization models driving capacity planning and operational decisions across a national delivery network. Led end-to-end analysis for model revisions, drift investigation, and retraining decisions.

Education

Degrees, certifications, and relevant coursework

Columbia University logoCU

Columbia University

Master of Science, Data Science

Master of Science in Data Science from Columbia University, completed in 2020.

Georgia Institute of Technology logoGT

Georgia Institute of Technology

Bachelor of Science, Industrial and Systems Engineering

Grade: Highest Honors

Bachelor of Science in Industrial and Systems Engineering from Georgia Institute of Technology, completed in 2015 with Highest Honors.

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