Chris Schaffner, PE, LEED Fellow, is the founder and CEO of The Green Engineer, Inc., a sustainable design consulting firm located in Concord, MA. Chris has over 36 years of experience in the design of building systems, with a focus on energy efficiency and sustainability. He holds a B.S. in Mechanical Engineering from M.I.T. and is a registered professional engineer in Massachusetts, California, and Vermont.

For over 36 years, Chris has been involved in many projects incorporating energy efficiency and sustainability. These projects have been across many building types, ranging from high-rise office buildings to small-scale multi-family residential. His projects include energy-intensive building types such as research laboratories and hospitals. His portfolio includes more than 225 projects that have achieved LEED Certification.

Erik Ruoff, LEED AP BD+C, is the principal and director of operations of The Green Engineer, Inc., and has helped build the company to be one of the premier sustainable design consulting firms. Erik has acted as the LEED Project Manager or Administrator for over 70 LEED certified projects, with another 20+ pursuing certification. He was the project manager for the 1st project to achieve WELL Gold in the US, and the 2nd to achieve WELL Gold in the world, under the New & Existing Building category and is currently working on multiple WELL, Fitwel, and IFLI projects pursuing certification.

His experience as a practitioner gives him good insight into the motivating factors that drive owners to seek third-party certification of their projects, as well as the opportunities and challenges that come along with each system. Erik earned his B.A. from Bucknell University.