Karissa Witthuhn, P.E., is currently the PNW Engineering Team Lead and Regional Manager at Psomas. Previously, Karissa served as a Senior Project Manager at KPG Psomas and held project management roles at the City of Ellensburg, Perteet, and Oldcastle Precast. Early in their career, Karissa gained experience as a Design Engineer and Project Engineer. Karissa's foundation in engineering was established with a Bachelor of Science in Civil Engineering from Worcester Polytechnic Institute, where they studied from 2003 to 2007.
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