Erin Terwilleger

Senior Manager

Erin Terwilleger | Senior Manager

Erin leads data science teams for analytics and forecasting systems implementations while leveraging her advanced mathematics teaching experience to ensure her clients learn and adopt new solutions.

Erin Terwilleger has over seven years of experience in data science and analytical consulting for major retail and CPG companies. She spent the first three years of her analytical career on the research and development team at, helping to develop, document, and test a demand forecasting solution that was implemented at several global retail and CPG companies. Erin then transitioned to working on client projects, leading a team of data scientists in the implementation of forecasting solutions and SaaS services. Her experience includes projects with Belk, Estée Lauder, and Frito-Lay, among others. Before entering the analytical consulting world, Erin spent 11 years as a mathematics professor teaching undergraduate and graduate students, as well as publishing papers in the fields of Harmonic Analysis and Pedagogy. She earned her BS with honors and PhD in Mathematics from the University of Missouri-Columbia. She lives with her three daughters in Chicago, where she enjoys reading, exercising, home design, and spending time in nature and with good friends.

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