Honest. Thorough. Analysis.

Mechanical & Electrical Forensic Engineers Working with Clients Nationwide

Nationwide Reach.
Individual Attention.

Having lived and breathed mechanical, electrical and plumbing engineering for decades, Frank Young and Joslyn Hopmayer joined forces and started their own firm in 2021, Pinnacle Forensics. Their clients know that they will provide thorough services and accurate, detailed reports efficiently and consistently. Solving complicated puzzles comes naturally to both of them, and they understand that a quick response is required when a need arises. Additionally, they believe that maintaining their integrity and providing honest answers is the most important thing they do. With Pinnacle Forensics, you will work directly with one of the firm's owners, so you know your case is always in the hands of an expert with decades of hands-on experience, who will respond to your need quickly and provide thorough, honest analysis in every situation.

Photo_May_28_21 09-44-42 AM-5 copy LR

Detailed Analysis That Delivers the Answers Clients Need

We provide an unbiased investigation and analysis, as well as expert testimony when needed, of the mechanical, electrical and plumbing issue causation for insurance adjusters, manufacturers, attorneys and contractors.

Mixed race businessman using tablet computer

Insurance Companies

Man controlling hydraulic Punching Machine for drilling steel.


Woman working in court



Meet Our Leadership

Joslyn Square

Joslyn Hopmayer, PE


Joslyn pulls on more than 20 years experience providing mechanical engineering consulting services and expert witness testimony in litigation cases involving property damage, product liability and construction defects throughout the United States. Licensed in 11 states, her background includes assessments and analysis involving property loss, mechanical failures, builder’s risk, construction defect and product liability claims.

Frank Square

Frank Young, PE, CFEI, LC, LEED AP


Frank has provided hands-on electrical engineering consulting services throughout the United States and internationally since 1993, the last 10 of which have been focused heavily on forensic engineering. His background in healthcare, commercial, retail, industrial, science and technology and mission-critical electrical construction in multiple market sectors gives him the unique insight and critical attention to detail that insurance and legal professionals need to get to the bottom of forensic engineering matters.

Scroll to Top