Dimitrios Mandilas is an experienced energy specialist currently employed at Willdan since November 2021. Previous roles include data analyst at Apple via Kelly Services, where responsibilities involved data validation and quality assurance, and field/project engineer at A&S KAPETA OE, focusing on the renovation of the Thessaloniki Jewish Museum. Additionally, Dimitrios served as an energy engineer at ACT Architecture Ltd, leading engineering teams and managing projects for energy efficiency upgrades. Military service was completed as a sergeant in the Hellenic Army. Academic credentials include a Master of Science in Building Energy and Environments from The University of Texas at Austin and a combined BSc and MSc in Structural Engineering from Aristotle University of Thessaloniki.