Demetrios started his career as an estimator and has worked his way up to Senior Project Manager, giving him 15 years’ experience in HVAC construction. His knowledge base spans several areas from estimating to project management of HVAC systems ranging from $50,000 to $20,000,000. He completed a Master’s degree in Mechanical Engineering at City College of New York and has worked on several major projects during his 5 years with Donnelly Mechanical, including tenant fit-outs and chiller replacements at A&E Network Headquarters, Boston Properties, Cassidy Turley, ION Trading, and Silverstein Properties.

He holds certifications in the following areas:

  • OSHA 30-Hour Training
  • NYC DOB 4-Hour Supported Scaffold