Karla Cassidy, B.A.Sc., M.A.Sc., P.Eng.

J.S. Held’s Inaugural Global Risk Report Examines Potential Business Risks & Opportunities in 2024

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Karla Cassidy

Senior Engineer


+1 647 558 3861 (Office)
2 - 886 Winston Churchill Blvd.
Oakville, ON L6J 7X5

For current engineering licensure info, click here.

Karla Cassidy joined J.S. Held in July of 2022 as part of J.S. Held's acquisition of Kodsi Forensic Engineering.

Karla Cassidy, P.Eng., holds a bachelor's and master's of Applied Science (Honors Mechanical Engineering) from the University of Waterloo and is a registered Professional Engineer in Ontario. Ms. Cassidy has been an active member of the biomechanics community since 2006 and in the accident reconstruction industry since 2010. Her expertise spans both biomechanical and mechanical engineering. She has been involved in hundreds of cases involving vehicles, pedestrians, motorcycles, farm equipment, and cyclists. Her specialty areas are biomechanics, personal injury, injury probability, seatbelt usage, slips, trips and falls, and determination of occupant position. Ms. Cassidy also conducts collision reconstruction and damage consistency analyses. She is a published author and has provided litigation support. Karla’s personal interests include the outdoors, camping, hiking, and spending time with her kids.

Karla is a Senior Engineer specializing in biomechanical analysis and accident reconstruction. She has extensive involvement in numerous reconstructions involving injury risk, seatbelt assessment, where an occupant may have been seated, avoidance analysis, severity analysis, and damage consistency.

Key Expertise

  • Biomechanics
  • Injury Mechanism
  • Injury Probability & Potential
  • Seatbelt Usage
  • Slip/Trip & Falls
  • Collision Damage Consistency
  • Area of Impact Determination
  • Speed Calculations
  • Speed Impact Analysis
  • Vehicle Crush Measurements
  • Avoidance Analysis

Professional Affiliations/Memberships/Licenses/Training

  • Professional Engineers of Ontario (PEO)
  • Professional Engineers of Nova Scotia
  • Professional Engineers and Geoscientists of Newfoundland and Labrador
  • Certified CDR System Analyst, 2015
  • Certified CDR System Operator, 2015

Insights by Karla Cassidy

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Why Whiplash Is a Common Symptom of Rear-End Collisions
It’s common that rear-end collisions result in symptoms of whiplash. To determine how these symptoms develop, we must first consider...