5+ years working as a mechanical engineer or engineering lead at a Fortune 500 or major industrial, automotive, aerospace, or manufacturing company ( GE , Boeing , Caterpillar , Ford , Honeywell , Siemens , Bosch , Rolls-Royce , Mitsubishi Heavy Industries ). Apply enterprise mechanical engineering methodologies ( FEA/CFD simulation , DFM/DFA principles , Six Sigma/DFSS , GD&T per ASME Y14.5 or ISO GPS ) and produce reference design specifications, engineering analyses, and executive-level technical narratives.