John Gregory Williams leads the design and engineering team at Harris Company mechanical contractors nationally, he trained as a mechanical engineer, earning his degree from the University of Manchester, UK, he is a Chartered Engineer in the UK and a Licensed Mechanical Professional Engineer in California, USA with ongoing commitments within ASHRAE and other relevant organizations.  He has over 20 years of experience in the construction industry as a creative problem solver using his passion for the built environment and experiences and skills in design, leadership, sustainability, analysis tools, project management and MEP/Utilities systems engineering to deliver complex and innovative projects to meet occupants and clients needs. Notable projects include: Apple Park, Cupertino, Mercedes Benz Stadium, Atlanta and The Shard of Glass in London, UK.