About JZ Engineering
John Zeirke is a licensed mechanical engineer providing forensic analysis and expert witness services for attorneys, insurers, investigators, and Special Investigation Units.
His work focuses on accident reconstruction, mechanical failure analysis, vehicle and equipment fire investigation, and product liability matters involving vehicles and heavy equipment.
Cell: 612-246-5456
Email:
Based in Minnesota.
Serving clients throughout the Midwest and nationwide.
Licensed in Minnesota, Wisconsin, Illinois, Iowa, South Dakota, and North Dakota.
JZ Engineering, LLC is a forensic mechanical engineering firm specializing in accident reconstruction, fire investigation, mechanical failure analysis, and product liability matters.
The firm is led by John Zeirke, P.E., a mechanical engineer with more than 20 years of combined design and forensic engineering experience.
John’s background includes product design and development roles involving large mining equipment and on-road vehicles. That experience provides practical insight into design intent, failure modes, safety-related issues, product defects, and recall-related claims.
John’s forensic work includes vehicle accident reconstruction, mechanical failure investigations, product defect analysis, fire origin and cause investigation, and technical evaluations involving vehicles, heavy equipment, and mechanical systems.
His analysis may include physical evidence, vehicle data, scene inspections, service records, video analysis, photogrammetry, drone documentation, and engineering calculations.
The goal is to help clients understand what happened, why it happened, and what the available evidence supports.
Prior product design and development experience supports John’s work in product liability and defect-related matters.
His background allows him to evaluate design intent, mechanical function, failure modes, maintenance issues, usage factors, and whether a claimed failure is consistent with the physical evidence.
JZ Engineering assists plaintiff attorneys, defense attorneys, insurance carriers, and Special Investigation Units with technical case review, forensic analysis, written reports, and expert witness services.
John’s work is focused on delivering objective, technically sound conclusions that can be clearly communicated in legal and insurance contexts.
Expert testimony experience and a full CV are available upon request.
Forensic engineering is not just about technical analysis. It is also about helping clients understand the evidence, the limitations of the evidence, and the engineering principles that apply to the case.
John emphasizes clear communication, practical insight, and defensible opinions that help attorneys and insurers evaluate claims, prepare cases, and make informed decisions.
Areas of Focus
JZ Engineering provides technical analysis and expert support across several related practice areas.
Collision analysis using physical evidence, vehicle data, scene documentation, video, and engineering principles.
Root cause analysis for mechanical system and/or components failures.
Origin and cause investigation for vehicle and heavy equipment fires, including electrical, fuel, hydraulic, and recall-related issues.
Case review, technical consultation, written reports, deposition testimony, trial testimony, and rebuttal analysis.
Video
John has given presentations to attorneys and insurance adjusters about technical aspects of forensic engineering, accident reconstruction, product design, and claim evaluation.
This video gives potential clients an opportunity to hear John explain technical issues and get a sense of his communication style.
A full CV is available for attorneys, insurers, and case review inquiries. JZ Engineering is available for case consultation, inspections, and time-sensitive evidence evaluation.