Mohsen Roudsari is a diagnostics and regulatory expert specializing in automotive, HVAC, and nuclear systems. A recognized DOE and NRC radiological waste disposal SME, he has led and governed high-hazard, federally regulated operations and applies forensic diagnostic methods to determine root cause, defect, and compliance. With 10 years as a Lead Automotive Mechanic, EPA 608 certification, and executive-level nuclear experience, he delivers clear, defensible expert opinions for litigation, arbitration, and regulatory matters.