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Marissa Siemens is a skilled Civil Engineer currently employed at TD&H Engineering since April 2015. Previously, Marissa served as a Lead Drilling Engineer at ExxonMobil Development Company from January 2008 to August 2014, where responsibilities included overseeing drilling rig design feasibility studies for arctic operations, leading a geographically diverse engineering team, and supporting well planning and drilling operations in Turkey and Angola. Earlier experience includes an Engineer Internship in the Onshore Construction Group at ExxonMobil, where Marissa created a comprehensive guide for onshore facility construction strategies, as well as internships focused on drilling engineering and project management at ExxonMobil and Kiewit Pacific Company. Marissa holds a Bachelor of Science degree in General Engineering with a Civil Option from Montana Technological University, completed in 2007, and attended Northern Arizona University from 2003 to 2004.