Mayyas Tleiss has extensive experience in engineering and project management, currently serving as an Estimator at CDM Smith since October 2022. Prior roles include Product Applications Engineer at Leviat in North America from July 2021 to October 2022, and Estimator at Burgess Civil, LLC between August 2019 and March 2020. Mayyas also held a significant position as Senior Water and Habitat Engineer at the International Committee of the Red Cross from February 2016 to July 2019, and worked as a Project Engineer at Consolidated Contractors International Company from June 2010 to February 2016. Educational qualifications include a Master's degree in Oil and Gas from IFP School (2014-2016), a Professional Education in Project Management from the University of South Florida (2020-2021), and a Bachelor of Engineering in Civil & Environmental Engineering from Saint Joseph University of Beirut (2005-2010).