John T. Boyer Sr., PE, is a highly accomplished and pioneering architectural engineer who has nearly forty years of experience with building environmental systems.

His diverse expertise encompasses litigation support and engineering expert witness services; forensic engineering; property loss investigations; architectural engineering; mechanical, electrical, and plumbing (MEP) engineering; fire suppression and protection engineering; smart and connected building performance management and design; building code applications and best practices; and engineering-related business development.

Mr. Boyer contributed to the reference book More Sticks & Bricks – A Lawyer’s Guide to Advanced Construction Systems and Techniques, published by the American Bar Association. He has lectured in graduate-level courses including MEP forensics and “Building Failures.” He is an American Council of Engineering Companies (ACEC) Certified Engineering Expert Witness (EXW℠).

In addition to domestic PE licensure, ACEC EXW℠ certification, and Associate AIA status, his credentials include:

  • CPD (Certified Plumbing Designer), ASPE
  • CEM (Certified Energy Manager), AEE
  •  CEA (Certified Energy Auditor), AEE
  • CDSM (Certified Demand Side Manager), AEE
  • GBE (Green Building Engineer), AEE
  • Construction: TWIC, SWAC, OSHA 10
  • International Registry Certificate; USCIEP/NCEES; EMF/APEC admittance for international engineering practice

Employment History

Architectural Engineer, 2019 – 2024

Thorton Tomasetti, Inc.
Principal, MEP Leader, 2012 – 2018

The Boyer Partnership, Inc.
Vice President, Director of Design, 1987 – 2012

Transystems (formerly L. R. Kimball & Assoc.
Architectural Engineering Technician (EIT), 1984 – 1987

Federal Emergency Management Agency (FEMA) Region IV, US Army Corps of Engineers
Civil Engineering Technician, 1982 – 1983

Professional Affiliations

National Society of Professional Engineers

American Institute of Architects

National Council of Examiners for Engineering and Surveying

Architectural Engineering Institute (founding member), American Society of Civil Engineers

American Society of Plumbing Engineers

Association of Energy Engineers + Energy Managers Society (charter member)

American Society of Heating, Refrigeration, and Air Conditioning Engineers

National Fire Protection Association

Construction Specifications Institute

Loss Executives Association


Professional Engineer (General, Architectural, and Mechanical): Alabama, California, Connecticut, Delaware, Washington, DC, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Missouri, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin, and Guam

International Registry Certificate
USCIEP/NCEES; EMF/APEC admittance for international engineering practice

American Council of Engineering Companies (ACEC)
Engineering Expert Witness (EXW℠)

Scaffolding and Suspended Platform Safety Certification, 2018

FMI Executive Coaching (two-year) Program, 2015 – 2017

OSHA 10, Workplace Safety Training Certification, 2013

Transportation Worker Identification Credential (TWIC), 2012

Secure Worker Access Consortium (SWAC), 2012

Certified Engineering Expert Witness, 2011

International Registry Certified for International Practice, USCIEP/NCEES and EM, 2009

Certified Energy Auditor, 2009

Certified Green Building Engineer, 2009

Certified Demand Side Manager, 2007

Certified Plumbing Designer, 2006

Certified Energy Manager, 2006

Areas of Expertise


The Pennsylvania State University, University Park and Altoona
Associate Degree, Business Administration (coursework), 1987
Bachelor of Architectural Engineering, Environmental Systems Option, 1985