Parametric Mechanical CAD Specialist

About OpenTrain
OpenTrain is the centralized, open platform where AI training and data-labeling freelancers find work, consolidate opportunities across platforms, and build a unified AI training portfolio they control. We make specialized AI training work easier to track, apply for, and grow into a durable freelance career.

About this role
OpenTrain is recruiting a Parametric Mechanical CAD Specialist to support AI training work focused on mechanical CAD model review. You will use expertise in parametric 3D CAD models of mechanical parts and assemblies to create structured training data, review technical outputs, and provide clear written feedback. Prior AI training experience is not required. Strong real-world CAD knowledge is the key qualification.

What you will do
Create fully parametric 3D CAD models from written briefs, using robust feature trees and precise constraints. Edit and update existing models to meet technical requirements and document changes clearly. Audit models for dimensional accuracy, tolerance application, and manufacturability across injection molding, sheet metal, CNC machining, and casting or forging. Apply design-for-manufacturing principles and translate design intent into clear, structured CAD data. Communicate technical judgments and project updates clearly in writing and verbally.

Required skills
Relevant professional or academic expertise in mechanical CAD modeling and assembly-level design. At least four years of hands-on experience with SolidWorks, FreeCAD, Fusion 360, Autodesk Inventor, or a comparable parametric CAD platform. Practical GD&T experience using ASME Y14.5 or an equivalent standard. Experience supporting at least two manufacturing methods, strong dimensional and manufacturability judgment, and fluent English communication. Careful attention to detail and the ability to follow detailed guidelines consistently are essential. Reverse engineering, scan-to-CAD, point-cloud conversion, or CAD workflow automation with Python, iLogic, or VBA is an advantage.

Why work with OpenTrain
OpenTrain gives freelancers one place to manage AI training opportunities instead of rebuilding proof of work on every platform. A stronger OpenTrain profile helps you show credible experience, discover roles that match your skills, and turn AI training and data-labeling work into a long-term portfolio.