Strong understanding of transmission gearsets, gear mesh behavior, torque transfer paths, torsional dynamics, engine operating behavior, combustion order content, torque pulsation, rotating orders, sidebands, bearings, housings, and structure-borne noise paths. Knowledge of engine systems and engine NVH interactions, including combustion orders, firing frequency behavior, torque pulsation, engine mount tuning, accessory excitation, calibration effects, and engine-to-driveline noise paths.