David McDonnell is a cleared Senior Cost Estimator based in Oak Ridge, Tennessee, currently working at Amentum since 2023 and previously at a Federal Contractor. With extensive experience in estimating across various sectors, David has held roles such as Senior Cost Estimator at CONSOLIDATED NUCLEAR SECURITY, LLC, and Estimating Manager at BES Design/Build, LLC. David's career includes significant contributions to government projects, including cost oversight for the UPF Project and the AY 102 removal, which was recognized as a DOE Project of the Year. David holds a Bachelor of Science in Construction Engineering from East Tennessee State University.
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