OpenTrain AI is seeking a remote Parametric CAD Design and Review Specialist to develop, audit, and revise 3D mechanical models and technical drawings for AI training. Candidates must have at least 4 years of parametric modeling experience (or 10+ years for complex creation), strong Autodesk Inventor or comparable CAD skills, and GD&T and DFM knowledge. The worldwide, part-time contractor role requires English-language communication and offers 20+ hours per week.